diff --git a/README.md b/README.md
index b780cb5..8536afc 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,6 @@
 35 - 64 = -29
 17 / 4 = 4
 57 / 7 = 8
-15 - 32 = -17
 16 * 15 = 240
 32 + 58 = 90
 60 * 13 = 780