Update lcm.md

snippets/lcm.md

@@ -1,16 +1,15 @@
 ### lcm
 
-Returns the least common multiple of two or numbers/arrays.
+Returns the least common multiple of two or more numbers/arrays.
 
 Use the greatest common divisor (GCD) formula and `Math.abs()` to determine the least common multiple.
 The GCD formula uses recursion.
 
 ```js
 const lcm = (...arr) => {
-  let data = [].concat(...arr);
   const gcd = (x, y) => (!y ? x : gcd(y, x % y));
-  const helperLcm = (x, y) => x * y / gcd(x, y);
-  return arr.reduce((a, b) => helperLcm(a, b));
+  const _lcm = (x, y) => x * y / gcd(x, y);
+  return [].concat(...arr).reduce((a, b) => _lcm(a, b));
 };
 ```