-x+-21=-13

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Solution for -x+-21=-13 equation:


Simplifying
-1x + -21 = -13

Reorder the terms:
-21 + -1x = -13

Solving
-21 + -1x = -13

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + -1x = -13 + 21

Combine like terms: -21 + 21 = 0
0 + -1x = -13 + 21
-1x = -13 + 21

Combine like terms: -13 + 21 = 8
-1x = 8

Divide each side by '-1'.
x = -8

Simplifying
x = -8

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