diff --git a/README.md b/README.md
index b4f7374..1a39cab 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 9 / 8 = 1
 44 * 15 = 660
 67 - 45 = 22
+10 - 58 = -48