Question

What number should be added to both sides of the equation x - 7 = 1 to solve for the value of x ?

Answer 1

To solve for the value of x, the same number should be added to both sides of the equation x - 7 = 1. To isolate the variable x, we need to get rid of the -7 on the left side of the equation. To do that, we should add 7 to both sides of the equation. Adding 7 to both sides of the equation results in:

x - 7 + 7 = 1 + 7

On the left side, the -7 and +7 cancel out, leaving us with:

x = 1 + 7

And on the right side, we have:

x = 8

Therefore, the value of x is 8.