diff --git a/include/fintamath/core/MathObjectTypes.hpp b/include/fintamath/core/MathObjectTypes.hpp
index 964cc7dcf..25ca434f0 100644
--- a/include/fintamath/core/MathObjectTypes.hpp
+++ b/include/fintamath/core/MathObjectTypes.hpp
@@ -112,6 +112,7 @@ class MathObjectType {
     Derivative,
     Integral,
     Frac,
+    FracMixed,
     PowFunction,
     Floor,
     Ceil,
diff --git a/include/fintamath/functions/arithmetic/FracMixed.hpp b/include/fintamath/functions/arithmetic/FracMixed.hpp
new file mode 100644
index 000000000..9da664593
--- /dev/null
+++ b/include/fintamath/functions/arithmetic/FracMixed.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "fintamath/core/IArithmetic.hpp"
+#include "fintamath/functions/IFunction.hpp"
+
+namespace fintamath {
+
+class FracMixed : public IFunctionCRTP<IArithmetic, FracMixed, IArithmetic, IArithmetic, IArithmetic> {
+public:
+  std::string toString() const override {
+    return "frac";
+  }
+
+  static MathObjectType getTypeStatic() {
+    return MathObjectType::FracMixed;
+  }
+
+protected:
+  std::unique_ptr<IMathObject> call(const ArgumentRefVector &argsVect) const override;
+};
+
+}
diff --git a/src/fintamath/config/ExpressionConfig.cpp b/src/fintamath/config/ExpressionConfig.cpp
index 88fe9a689..7a90d94cb 100644
--- a/src/fintamath/config/ExpressionConfig.cpp
+++ b/src/fintamath/config/ExpressionConfig.cpp
@@ -21,6 +21,7 @@
 #include "fintamath/functions/arithmetic/Add.hpp"
 #include "fintamath/functions/arithmetic/Div.hpp"
 #include "fintamath/functions/arithmetic/Frac.hpp"
+#include "fintamath/functions/arithmetic/FracMixed.hpp"
 #include "fintamath/functions/arithmetic/Mul.hpp"
 #include "fintamath/functions/arithmetic/Neg.hpp"
 #include "fintamath/functions/arithmetic/Sub.hpp"
@@ -160,6 +161,14 @@ struct ExpressionConfig {
       return divExpr(std::move(args));
     });
 
+    Expression::registerFunctionExpressionMaker<FracMixed>([](ArgumentPtrVector &&args) {
+      ArgumentPtr integ = args[0];
+      ArgumentPtr numer = args[1];
+      ArgumentPtr denom = args[2];
+
+      return addExpr(integ, divExpr(numer, denom));
+    });
+
     Expression::registerFunctionExpressionMaker<And, true>([](ArgumentPtrVector &&args) {
       return AndExpression(std::move(args)).clone();
     });
diff --git a/src/fintamath/config/ParserConfig.cpp b/src/fintamath/config/ParserConfig.cpp
index db4dc00ee..b68c97ded 100644
--- a/src/fintamath/config/ParserConfig.cpp
+++ b/src/fintamath/config/ParserConfig.cpp
@@ -9,6 +9,7 @@
 #include "fintamath/functions/arithmetic/Add.hpp"
 #include "fintamath/functions/arithmetic/Div.hpp"
 #include "fintamath/functions/arithmetic/Frac.hpp"
+#include "fintamath/functions/arithmetic/FracMixed.hpp"
 #include "fintamath/functions/arithmetic/Mul.hpp"
 #include "fintamath/functions/arithmetic/Neg.hpp"
 #include "fintamath/functions/arithmetic/Sign.hpp"
@@ -225,6 +226,7 @@ struct ParserConfig {
     IFunction::registerType<Derivative>();
     IFunction::registerType<Integral>();
     IFunction::registerType<Frac>();
+    IFunction::registerType<FracMixed>();
     IFunction::registerType<PowFunction>();
     IFunction::registerType<Floor>();
     IFunction::registerType<Ceil>();
diff --git a/src/fintamath/functions/arithmetic/FracMixed.cpp b/src/fintamath/functions/arithmetic/FracMixed.cpp
new file mode 100644
index 000000000..1fd2397a9
--- /dev/null
+++ b/src/fintamath/functions/arithmetic/FracMixed.cpp
@@ -0,0 +1,16 @@
+#include "fintamath/functions/arithmetic/FracMixed.hpp"
+
+#include "fintamath/functions/arithmetic/Add.hpp"
+#include "fintamath/functions/arithmetic/Div.hpp"
+
+namespace fintamath {
+
+std::unique_ptr<IMathObject> FracMixed::call(const ArgumentRefVector &argsVect) const {
+  const auto &integ = cast<IArithmetic>(argsVect[0].get());
+  const auto &numer = cast<IArithmetic>(argsVect[1].get());
+  const auto &denom = cast<IArithmetic>(argsVect[2].get());
+
+  return Add()(integ, *Div()(numer, denom));
+}
+
+}
diff --git a/tests/src/functions/arithmetic/FracMixedTests.cpp b/tests/src/functions/arithmetic/FracMixedTests.cpp
new file mode 100644
index 000000000..82657dc3c
--- /dev/null
+++ b/tests/src/functions/arithmetic/FracMixedTests.cpp
@@ -0,0 +1,63 @@
+#include "gtest/gtest.h"
+
+#include "fintamath/functions/arithmetic/Add.hpp"
+
+#include "fintamath/exceptions/InvalidInputException.hpp"
+#include "fintamath/functions/arithmetic/FracMixed.hpp"
+#include "fintamath/functions/arithmetic/Sub.hpp"
+#include "fintamath/functions/arithmetic/UnaryPlus.hpp"
+#include "fintamath/literals/Variable.hpp"
+#include "fintamath/numbers/Rational.hpp"
+
+using namespace fintamath;
+
+const FracMixed f;
+
+TEST(FracMixedTests, toStringTest) {
+  EXPECT_EQ(f.toString(), "frac");
+}
+
+TEST(FracMixedTests, getFunctionTypeTest) {
+  EXPECT_EQ(f.getFunctionType(), IFunction::Type::Ternary);
+}
+
+TEST(FracMixedTests, callTest) {
+  EXPECT_EQ(f(Integer(0), Integer(3), Integer(5))->toString(), "3/5");
+  EXPECT_EQ(f(Integer(0), Integer(3), Rational(5, 2))->toString(), "6/5");
+  EXPECT_EQ(f(Integer(0), Rational(5, 2), Integer(3))->toString(), "5/6");
+  EXPECT_EQ(f(Integer(0), Rational(5, 2), Rational(5, 3))->toString(), "3/2");
+
+  EXPECT_EQ(f(Integer(0), Integer(3), Variable("a"))->toString(), "3/a");
+
+  EXPECT_THROW(f(Integer(1)), InvalidInputFunctionException);
+  EXPECT_THROW(f(Rational(2, 3)), InvalidInputFunctionException);
+  EXPECT_THROW(f(), InvalidInputFunctionException);
+  EXPECT_THROW(f(Integer(1), Integer(1), Integer(1), Integer(1)), InvalidInputFunctionException);
+}
+
+TEST(FracMixedTests, doArgsMatchTest) {
+  Integer a;
+
+  EXPECT_FALSE(f.doArgsMatch({}));
+  EXPECT_FALSE(f.doArgsMatch({a}));
+  EXPECT_FALSE(f.doArgsMatch({a, a}));
+  EXPECT_TRUE(f.doArgsMatch({a, a, a}));
+  EXPECT_FALSE(f.doArgsMatch({a, a, a, a}));
+}
+
+TEST(FracMixedTests, equalsTest) {
+  EXPECT_EQ(f, f);
+  EXPECT_EQ(f, FracMixed());
+  EXPECT_EQ(FracMixed(), f);
+  EXPECT_EQ(f, cast<IMathObject>(FracMixed()));
+  EXPECT_EQ(cast<IMathObject>(FracMixed()), f);
+  EXPECT_NE(f, Sub());
+  EXPECT_NE(Sub(), f);
+  EXPECT_NE(f, UnaryPlus());
+  EXPECT_NE(UnaryPlus(), f);
+}
+
+TEST(FracMixedTests, getTypeTest) {
+  EXPECT_EQ(FracMixed::getTypeStatic(), MathObjectType::FracMixed);
+  EXPECT_EQ(FracMixed().getType(), MathObjectType::FracMixed);
+}
diff --git a/tests/src/parser/ParserTests.cpp b/tests/src/parser/ParserTests.cpp
index ae4f25b6c..b851fb148 100644
--- a/tests/src/parser/ParserTests.cpp
+++ b/tests/src/parser/ParserTests.cpp
@@ -8,6 +8,7 @@
 #include "fintamath/functions/arithmetic/Add.hpp"
 #include "fintamath/functions/arithmetic/Div.hpp"
 #include "fintamath/functions/arithmetic/Frac.hpp"
+#include "fintamath/functions/arithmetic/FracMixed.hpp"
 #include "fintamath/functions/arithmetic/Mul.hpp"
 #include "fintamath/functions/arithmetic/Neg.hpp"
 #include "fintamath/functions/arithmetic/Sign.hpp"
@@ -243,16 +244,12 @@ TEST(ParserTests, parseFunctionTest) {
   EXPECT_TRUE(is<Acsch>(IFunction::parse("acsch")));
   EXPECT_TRUE(is<Derivative>(IFunction::parse("derivative")));
   EXPECT_TRUE(is<Integral>(IFunction::parse("integral")));
-  EXPECT_TRUE(is<Frac>(IFunction::parse("frac")));
+  EXPECT_TRUE(is<Frac>(IFunction::parse("frac", IFunction::Type::Binary)));
+  EXPECT_TRUE(is<FracMixed>(IFunction::parse("frac", IFunction::Type::Ternary)));
   EXPECT_TRUE(is<PowFunction>(IFunction::parse("pow")));
   EXPECT_TRUE(is<Floor>(IFunction::parse("floor")));
   EXPECT_TRUE(is<Ceil>(IFunction::parse("ceil")));
 
-  EXPECT_TRUE(is<Add>(IFunction::parse("+", IFunction::Type::Binary)));
-  EXPECT_TRUE(is<UnaryPlus>(IFunction::parse("+", IFunction::Type::Unary)));
-  EXPECT_TRUE(is<Sub>(IFunction::parse("-", IFunction::Type::Binary)));
-  EXPECT_TRUE(is<Neg>(IFunction::parse("-", IFunction::Type::Unary)));
-
   EXPECT_EQ(IFunction::parse("asdgewfe"), nullptr);
   EXPECT_EQ(IFunction::parse("1224"), nullptr);
 }