-x-7=-8

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Solution for -x-7=-8 equation: 


Simplifying
-1x + -7 = -8

Reorder the terms:
-7 + -1x = -8

Solving
-7 + -1x = -8

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + 7 + -1x = -8 + 7

Combine like terms: -7 + 7 = 0
0 + -1x = -8 + 7
-1x = -8 + 7

Combine like terms: -8 + 7 = -1
-1x = -1

Divide each side by '-1'.
x = 1

Simplifying
x = 1

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