x+8=4x-31

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


Simplifying
x + 8 = 4x + -31

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

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

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

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

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

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

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

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

Divide each side by '-3'.
x = 13

Simplifying
x = 13

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