diff --git a/src/math.js b/src/math.js
new file mode 100644
index 0000000..5fef7f5
--- /dev/null
+++ b/src/math.js
@@ -0,0 +1,6 @@
+function checkBalance(balance, amount) {
+  if (balance - amount == 0) {
+    return true;
+  }
+  return false;
+}