-x+-1=x+-21

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Solution for -x+-1=x+-21 equation:


Simplifying
-1x + -1 = x + -21

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

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

Solving
-1 + -1x = -21 + x

Solving for variable 'x'.

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

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

Combine like terms: -1x + -1x = -2x
-1 + -2x = -21 + x + -1x

Combine like terms: x + -1x = 0
-1 + -2x = -21 + 0
-1 + -2x = -21

Add '1' to each side of the equation.
-1 + 1 + -2x = -21 + 1

Combine like terms: -1 + 1 = 0
0 + -2x = -21 + 1
-2x = -21 + 1

Combine like terms: -21 + 1 = -20
-2x = -20

Divide each side by '-2'.
x = 10

Simplifying
x = 10

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