diff --git a/07_tempConversion/tempConversion.js b/07_tempConversion/tempConversion.js
index 14153e0..abea34c 100644
--- a/07_tempConversion/tempConversion.js
+++ b/07_tempConversion/tempConversion.js
@@ -1,7 +1,9 @@
-const convertToCelsius = function() {
+const convertToCelsius = function(deg) {
+  return (deg - 32) * (5/9);
 };
 
 const convertToFahrenheit = function() {
+  // x °C ≘ (x ×9/5+ 32) °F
 };
 
 // Do not edit below this line