diff --git a/README.md b/README.md
index ac6227b..b22061d 100644
--- a/README.md
+++ b/README.md
@@ -27,3 +27,4 @@
 51 / 10 = 5
 65 - 38 = 27
 93 + 38 = 131
+47 - 90 = -43