From 7c3f40216bba6115b43ebfcd33a4a8de779b694b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tiia=20Bj=C3=B6rk?= <tiia.bjork@gmail.com>
Date: Thu, 19 Jan 2017 07:11:19 +0200
Subject: [PATCH] teht 2 ratkaisu

---
 koodi.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/koodi.rb b/koodi.rb
index 932f2b3..5b0b94c 100644
--- a/koodi.rb
+++ b/koodi.rb
@@ -1 +1,5 @@
 # kirjoita koodi tänne
+def erotus(l1,l2)
+  ero = -l2 + l1
+  puts ero
+end