-x+31=x+13

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Solution for -x+31=x+13 equation:


Simplifying
-1x + 31 = x + 13

Reorder the terms:
31 + -1x = x + 13

Reorder the terms:
31 + -1x = 13 + x

Solving
31 + -1x = 13 + 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.
31 + -1x + -1x = 13 + x + -1x

Combine like terms: -1x + -1x = -2x
31 + -2x = 13 + x + -1x

Combine like terms: x + -1x = 0
31 + -2x = 13 + 0
31 + -2x = 13

Add '-31' to each side of the equation.
31 + -31 + -2x = 13 + -31

Combine like terms: 31 + -31 = 0
0 + -2x = 13 + -31
-2x = 13 + -31

Combine like terms: 13 + -31 = -18
-2x = -18

Divide each side by '-2'.
x = 9

Simplifying
x = 9

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