evaluate each expression:

18 - (7 - 7)

32 ÷ (8 - 4)

90 - 16 ÷ 4

3(18 - 12) - (5 - 3)

(24 - 10) - 3 × 3

4(22 - 18) - 3 × 5

12(5 - 5) + 3 × 5

18(4 - 3) ÷ 3 + 3