Reasoning » Puzzle

If the numbers 15 and 21 are interchanged, then which of the following equations will be correctly balanced?

A

26 + 21 × 15 ÷ 3 – 14 = 108

B

63 ÷ 15 + 21 × 5 – 4 = 74

C

62 ÷ 31 – 21 + 15 × 3 = 80

D

24 – 21 ÷ 3 + 15 – 7 = 23