-x-31=8-4x

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Solution for -x-31=8-4x equation:


Simplifying
-1x + -31 = 8 + -4x

Reorder the terms:
-31 + -1x = 8 + -4x

Solving
-31 + -1x = 8 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
-31 + -1x + 4x = 8 + -4x + 4x

Combine like terms: -1x + 4x = 3x
-31 + 3x = 8 + -4x + 4x

Combine like terms: -4x + 4x = 0
-31 + 3x = 8 + 0
-31 + 3x = 8

Add '31' to each side of the equation.
-31 + 31 + 3x = 8 + 31

Combine like terms: -31 + 31 = 0
0 + 3x = 8 + 31
3x = 8 + 31

Combine like terms: 8 + 31 = 39
3x = 39

Divide each side by '3'.
x = 13

Simplifying
x = 13

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