4x-31=8+x

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


Simplifying
4x + -31 = 8 + x

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

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

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

Combine like terms: x + -1x = 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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