diff --git a/README.md b/README.md
index fb9a8f1..0b01b9c 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,6 @@
 14 * 17 = 238
 59 * 8 = 472
 8 + 23 = 31
-13 + 86 = 99
 69 / 6 = 11
 32 / 1 = 32
 73 * 90 = 6570