diff --git a/README.md b/README.md
index 93e9e3f..bd24162 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,6 @@
 65 * 76 = 4940
 26 / 8 = 3
 58 - 94 = -36
-99 - 78 = 21
 11 / 10 = 1
 96 + 98 = 194
 2 - 4 = -2