diff --git a/README.md b/README.md
index 242b5c8..f748231 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 14 * 83 = 1162
 56 + 72 = 128
 66 / 3 = 22
+5 - 92 = -87