diff --git a/README.md b/README.md
index e33a760..1d60fb1 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 83 + 17 = 100
 37 - 58 = -21
 12 - 91 = -79
+20 - 52 = -32