diff --git a/README.md b/README.md
index 06f3da3..ba2fbc8 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,6 @@
 92 * 61 = 5612
 65 + 78 = 143
 15 / 5 = 3
-13 + 89 = 102
 82 * 16 = 1312
 63 * 56 = 3528
 18 / 9 = 2