diff --git a/README.md b/README.md
index f68f5e1..f5ffb3b 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,6 @@
 42 / 10 = 4
 53 - 2 = 51
 62 * 61 = 3782
-57 - 55 = 2
 41 * 21 = 861
 46 + 56 = 102
 27 * 9 = 243