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
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