diff --git a/chapter_1/ex_2.rkt b/chapter_1/ex_2.rkt
new file mode 100644
index 0000000..0b6f05c
--- /dev/null
+++ b/chapter_1/ex_2.rkt
@@ -0,0 +1,11 @@
+#lang sicp
+
+;Translate the following expression into prefix (5+4+(2-(3-(6+4/5))))/(3(6-2)(2-7))
+
+
+(/  (+ 5 4 (- 2 (- 3 (+ 6 (/ 4 5)))))
+
+    (* 3 (* (- 6 2) (- 2 7)))
+)
+
+; the result is -37/150
\ No newline at end of file