diff --git a/src/sicp/chapter_1/part_1/ex_1_6.clj b/src/sicp/chapter_1/part_1/ex_1_6.clj
index 6871a99..e567087 100644
--- a/src/sicp/chapter_1/part_1/ex_1_6.clj
+++ b/src/sicp/chapter_1/part_1/ex_1_6.clj
@@ -33,13 +33,13 @@
 (defn sqrt-iter
   [guess x]
   (if (good-enough? guess x)
-          guess
-          (sqrt-iter (improve guess x) x)))
+    guess
+    (sqrt-iter (improve guess x) x)))
 
 (defn sqrt-iter-new-if
   [guess x]
   (new-if (good-enough? guess x)
-    guess
-    (sqrt-iter (improve guess x) x)))
+          guess
+          (sqrt-iter (improve guess x) x)))
 
 ; What happens when Alyssa attempts to use this to compute square roots? Explain.
diff --git a/src/sicp/chapter_1/part_2/ex_1_9.clj b/src/sicp/chapter_1/part_2/ex_1_9.clj
index f3a6d3e..edb41db 100644
--- a/src/sicp/chapter_1/part_2/ex_1_9.clj
+++ b/src/sicp/chapter_1/part_2/ex_1_9.clj
@@ -8,13 +8,13 @@
   [a b]
   (if (= a 0)
     b
-    (inc (+ (dec a) b)))) ; linear recursive
+    (inc (+ (dec a) b))))                                   ; linear recursive
 
 (defn plus-v2
   [a b]
   (if (= a 0)
     b
-    (+ (dec a) (inc b)))) ; linear iteration
+    (+ (dec a) (inc b))))                                   ; linear iteration
 
 ; Using the substitution model, illustrate the process generated by each procedure in evaluating (+ 4 5).
 ; Are these processes iterative or recursive?
diff --git a/test/sicp/chapter_1/part_1/ex_1_5_test.clj b/test/sicp/chapter_1/part_1/ex_1_5_test.clj
index 0679632..e1b968e 100644
--- a/test/sicp/chapter_1/part_1/ex_1_5_test.clj
+++ b/test/sicp/chapter_1/part_1/ex_1_5_test.clj
@@ -1,6 +1,6 @@
 (ns sicp.chapter-1.part_1.ex-1-5-test
   (:require [clojure.test :refer [deftest is]]
-            [sicp.chapter-1.part_1.ex-1-5 :refer [test_1_5 p]]))
+            [sicp.chapter-1.part_1.ex-1-5 :refer [p test_1_5]]))
 
 (deftest test_1_5-test
   ; Normal: Operand "p" will not be evaluated until it's needed by some primitive operation. So result is 0.
diff --git a/test/sicp/chapter_1/part_2/ex_1_18_test.clj b/test/sicp/chapter_1/part_2/ex_1_18_test.clj
index c5ff09c..29ece59 100644
--- a/test/sicp/chapter_1/part_2/ex_1_18_test.clj
+++ b/test/sicp/chapter_1/part_2/ex_1_18_test.clj
@@ -1,6 +1,6 @@
 (ns sicp.chapter-1.part_2.ex-1-18-test
-  (:require [clojure.test :refer [deftest is]])
-  (:require [sicp.chapter-1.part_2.ex-1-18 :refer [mult]]))
+  (:require [clojure.test :refer [deftest is]]
+            [sicp.chapter-1.part_2.ex-1-18 :refer [mult]]))
 
 (deftest mult-test
   (is (= 0 (mult 0 19))))
diff --git a/test/sicp/chapter_1/part_2/ex_1_20_test.clj b/test/sicp/chapter_1/part_2/ex_1_20_test.clj
index 0caae2b..8d057c9 100644
--- a/test/sicp/chapter_1/part_2/ex_1_20_test.clj
+++ b/test/sicp/chapter_1/part_2/ex_1_20_test.clj
@@ -1,6 +1,6 @@
 (ns sicp.chapter-1.part_2.ex-1-20-test
-  (:require [clojure.test :refer [deftest is]])
-  (:require [sicp.chapter-1.part_2.ex-1-20 :refer [gcd]]))
+  (:require [clojure.test :refer [deftest is]]
+            [sicp.chapter-1.part_2.ex-1-20 :refer [gcd]]))
 
 (deftest gcd-test
   (is (= 2 (gcd 206 40)))                                   ; 4 times
diff --git a/test/sicp/chapter_1/part_2/ex_1_21_test.clj b/test/sicp/chapter_1/part_2/ex_1_21_test.clj
index 3601f18..ebf79ee 100644
--- a/test/sicp/chapter_1/part_2/ex_1_21_test.clj
+++ b/test/sicp/chapter_1/part_2/ex_1_21_test.clj
@@ -1,6 +1,6 @@
 (ns sicp.chapter-1.part_2.ex-1-21-test
-  (:require [clojure.test :refer [deftest is]])
-  (:require [sicp.chapter-1.part_2.ex-1-21 :refer [smallest-divisor]]))
+  (:require [clojure.test :refer [deftest is]]
+            [sicp.chapter-1.part_2.ex-1-21 :refer [smallest-divisor]]))
 
 (deftest smallest-divisor-test
   (is (= 199 (smallest-divisor 199)))
diff --git a/test/sicp/chapter_1/part_2/ex_1_22_test.clj b/test/sicp/chapter_1/part_2/ex_1_22_test.clj
index d79214b..7d6c669 100644
--- a/test/sicp/chapter_1/part_2/ex_1_22_test.clj
+++ b/test/sicp/chapter_1/part_2/ex_1_22_test.clj
@@ -1,6 +1,6 @@
 (ns sicp.chapter-1.part_2.ex-1-22-test
-  (:require [clojure.test :refer [deftest is]])
-  (:require [sicp.chapter-1.part_2.ex-1-22 :refer [find-primes]]))
+  (:require [clojure.test :refer [deftest is]]
+            [sicp.chapter-1.part_2.ex-1-22 :refer [find-primes]]))
 
 (deftest find-primes-test
   (is (= 5 (find-primes 1 5))))                             ; Change arguments and see the output