diff --git a/README.md b/README.md
index 375eac0..40a07c2 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,6 @@
 33 * 25 = 825
 29 - 15 = 14
 99 * 85 = 8415
-90 - 36 = 54
 16 * 15 = 240
 20 + 3 = 23
 69 / 1 = 69