Jika a per b = 80 maka a per 2b = By Admin ReiPosted on December 7, 2022 Jika a per b = 80 maka a per 2b = a/b = 80 a = 80b a/2b = 80b/2b = 40 a/b = 80 a/2b = ½(a/b) = ½ x 80 = 40