91-x=x+8

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Solution for 91-x=x+8 equation:


Simplifying
91 + -1x = x + 8

Reorder the terms:
91 + -1x = 8 + x

Solving
91 + -1x = 8 + 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.
91 + -1x + -1x = 8 + x + -1x

Combine like terms: -1x + -1x = -2x
91 + -2x = 8 + x + -1x

Combine like terms: x + -1x = 0
91 + -2x = 8 + 0
91 + -2x = 8

Add '-91' to each side of the equation.
91 + -91 + -2x = 8 + -91

Combine like terms: 91 + -91 = 0
0 + -2x = 8 + -91
-2x = 8 + -91

Combine like terms: 8 + -91 = -83
-2x = -83

Divide each side by '-2'.
x = 41.5

Simplifying
x = 41.5

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