diff --git a/README.md b/README.md
index 29a4592..801d567 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,6 @@
 92 + 97 = 189
 73 + 35 = 108
 70 / 10 = 7
-99 - 68 = 31
 76 - 63 = 13
 43 + 30 = 73
 53 / 8 = 6