-x-9=x+91

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Solution for -x-9=x+91 equation:


Simplifying
-1x + -9 = x + 91

Reorder the terms:
-9 + -1x = x + 91

Reorder the terms:
-9 + -1x = 91 + x

Solving
-9 + -1x = 91 + 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.
-9 + -1x + -1x = 91 + x + -1x

Combine like terms: -1x + -1x = -2x
-9 + -2x = 91 + x + -1x

Combine like terms: x + -1x = 0
-9 + -2x = 91 + 0
-9 + -2x = 91

Add '9' to each side of the equation.
-9 + 9 + -2x = 91 + 9

Combine like terms: -9 + 9 = 0
0 + -2x = 91 + 9
-2x = 91 + 9

Combine like terms: 91 + 9 = 100
-2x = 100

Divide each side by '-2'.
x = -50

Simplifying
x = -50

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