diff --git a/README.md b/README.md
index dfc9212..d8204e2 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,6 @@
 44 / 10 = 4
 93 + 38 = 131
 90 * 79 = 7110
-90 - 47 = 43
 68 + 67 = 135
 62 + 7 = 69
 85 - 70 = 15