By interchanging the given two signs which of the following equation will be not correct?
+ and –
1
18 ÷ 3 + 8 × 5 – 4 = 30
2
4 × 6 + 7 – 3 ÷ 1 = 20
3
18 + 8 × 6 ÷ 3 – 11 = 13
4
6 × 9 + 7 – 8 ÷ 2 = 51
By interchanging the given two signs which of the following equation will be not correct?
+ and –