diff --git a/README.md b/README.md
index 2e15a05..4e7c31f 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 24 * 28 = 672
 3 * 24 = 72
 48 / 4 = 12
+52 - 7 = 45