(1)39 + 20 = (2)27 + 40 = (3)14 + 50 = (4)26 + 70 = (5)18 + 10 = (6)83 + 10 = (7)28 + 60 = (8)17 + 10 = (9)72 + 20 = (10)14 + 60 = (11)33 + 50 = (12)78 + 10 = (13)59 + 20 = (14)65 + 10 = (15)52 + 20 =
