By interchanging the given two signs which of the following equation will be incorrect?
× and -
1
3 ÷ 8 - 16 × 8 + 5 = 3
2
21 - 4 ÷ 7 + 2 × 5 = 9
3
2 ÷ 5 - 10 + 7 × 8 = 3
4
91 ÷ 13 × 5 + 6 - 3 = 38
By interchanging the given two signs which of the following equation will be incorrect?
× and -