1) (9 2) + 12 = 18 + 12 = 302) (15 / 5) + 17 = 3 + 17 = 203) 56 - (9 4) = 56 - 36 = 204) 12 + (18 / 2) = 12 + 9 = 21
1) (9 2) + 12 = 18 + 12 = 30
2) (15 / 5) + 17 = 3 + 17 = 20
3) 56 - (9 4) = 56 - 36 = 20
4) 12 + (18 / 2) = 12 + 9 = 21