By interchanging the given two signs which of the following equation will be not correct

By interchanging the given two signs which of the following equation will be not correct?

+ and –

A. 18 ÷ 3 + 8 × 5 – 4 = 30

B. 4 × 6 + 7 – 3 ÷ 1 = 20

C. 18 + 8 × 6 ÷ 3 – 11 = 13

D. 6 × 9 + 7 – 8 ÷ 2 = 51

Sol:

Starts from option A

18 ÷ 3 – 8 × 5 + 4 = 6 – 40 + 4 = – 30

Equation in option A is not correct.