diff --git a/README.md b/README.md
index 4bcc0e7..2aca7c8 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,6 @@
 54 * 81 = 4374
 94 - 6 = 88
 2 - 29 = -27
-80 - 41 = 39
 33 + 91 = 124
 89 * 89 = 7921
 77 * 39 = 3003