# Which One of The Following Becomes Correct? If

After interchanging + and -, 8 and 7, which one of the following becomes correct?

- 8 x 2 + 7- 6=9
- 7 x 8 + 6 -9 =25
- 8 – 7 + 3 x 5=35
- 6 + 8 x 2 -7 =0

**Answer: (4) 6 + 8 x 2 -7 = 0**

**Explanation:-
**Taking option (1),

8 x 2 + 7 – 6 = 9

After interchanging + and -, 8 and 7,

7 x 2 – 8 + 6

= 16 – 8 + 6

= 8 + 6 = 14

This option is wrong.

Taking option (2),

7 x 8 + 6 – 9 = 25

After interchange + and – , 8 and 7

8 x 7 – 6 + 9 = 56 – 6 + 9

= 50 + 9 = 59

This option is wrong .

Taking option (3),

8 – 7 + 3 x 5 = 35

After interchanging + and -, 8 and 7,

7 + 8 – 3 x 5

= 15 – 15 = 0

This option is wrong.

Taking option (4),

6 + 8 x 2 – 7 = 0

After interchanging + and -, 8 and 7,

6 – 7 x 2 + 8 = 6 – 14 + 8

= 14 – 14 = 0

This option is write.

Hence, the answer is (4) 6 + 8 x 2 – 7 = 0.