( 30 +6 ) - 4=32, 89 - ( 6+2 ) =81, 54 +20 =74, 45 - 3 =42.
30 + 6 - 4 = 32
89 -( 6 + 2) = 81
54 + 20 = 74
45 / 3 = 15
( 30 +6 ) - 4=32, 89 - ( 6+2 ) =81, 54 +20 =74, 45 - 3 =42.
30 + 6 - 4 = 32
89 -( 6 + 2) = 81
54 + 20 = 74
45 / 3 = 15