diff --git a/README.md b/README.md
index 13f0f98..168cf93 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 40 * 33 = 1320
 16 * 15 = 240
 3 + 31 = 34
+97 - 46 = 51