diff --git a/README.md b/README.md
index 311ee1e..33d93c0 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 57 - 55 = 2
 17 + 24 = 41
 24 * 69 = 1656
+93 - 42 = 51