insert parentheses to make each sentence true:

32 + 8 × 3 ÷ 4 = 30

15 - 3 ÷ 1 × 6 = 2

18 ÷ 3 + 3 - 2 = 1

16 - 8 ÷ 4 + 10 = 12

5 × 5 + 5 - 5 = 45