diff --git a/README.md b/README.md
index c13804f..210ea59 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 45 + 38 = 83
 6 - 47 = -41
 40 / 9 = 4
+62 - 90 = -28