diff --git a/solution.js b/solution.js
new file mode 100644
index 0000000..4fc05bc
--- /dev/null
+++ b/solution.js
@@ -0,0 +1 @@
+module.exports = {add: (a, b) => a + b};
diff --git a/solution.php b/solution.php
new file mode 100644
index 0000000..b8d8d21
--- /dev/null
+++ b/solution.php
@@ -0,0 +1,4 @@
+<?php
+function add($a, $b) {
+    return $a + $b;
+}
diff --git a/solution.py b/solution.py
new file mode 100644
index 0000000..9bc8bf7
--- /dev/null
+++ b/solution.py
@@ -0,0 +1 @@
+def add(a, b): return a + b
diff --git a/solution.rb b/solution.rb
new file mode 100644
index 0000000..ba85b82
--- /dev/null
+++ b/solution.rb
@@ -0,0 +1,3 @@
+def add(a, b)
+  a + b
+end