diff --git a/README.md b/README.md
index 392e9b0..6daabeb 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,6 @@
 43 - 84 = -41
 57 / 9 = 6
 29 / 5 = 5
-36 - 78 = -42
 31 / 2 = 15
 26 - 39 = -13
 64 - 61 = 3