diff --git a/README.md b/README.md
index d9a0450..b1546c6 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 24 / 8 = 3
 55 / 10 = 5
 80 + 49 = 129
+93 - 2 = 91