By Interchanging the given two numbers which of the following equation will be incorrect?
1 and 9
1
9 ÷ 4 × 8 – 2 + 1 = 10
2
7 ÷ 3 × 1 – 9 + 6 = 26
3
8 ÷ 2 × 7 – 1 + 9 = 20
4
1 ÷ 2 × 8 – 9 + 7 = 42
By Interchanging the given two numbers which of the following equation will be incorrect?
1 and 9