diff --git a/README.md b/README.md
index 50c4676..031e97d 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,6 @@
 81 + 69 = 150
 31 / 2 = 15
 69 * 71 = 4899
-54 - 79 = -25
 26 - 39 = -13
 37 / 6 = 6
 57 / 4 = 14