diff --git a/algorithms/gcd.py b/algorithms/gcd.py
new file mode 100644
index 0000000..b9cae45
--- /dev/null
+++ b/algorithms/gcd.py
@@ -0,0 +1,4 @@
+def gcd(a,b):
+	if b == 0:
+		return a
+	return gcd(b,a%b)
\ No newline at end of file
diff --git a/algorithms/lcm.py b/algorithms/lcm.py
new file mode 100644
index 0000000..488fce7
--- /dev/null
+++ b/algorithms/lcm.py
@@ -0,0 +1,2 @@
+def lcm(a,b):
+	return a/gcd(a,b)*b
\ No newline at end of file