x+7=31+3x

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Solution for x+7=31+3x equation:


Simplifying
x + 7 = 31 + 3x

Reorder the terms:
7 + x = 31 + 3x

Solving
7 + x = 31 + 3x

Solving for variable 'x'.

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

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

Combine like terms: x + -3x = -2x
7 + -2x = 31 + 3x + -3x

Combine like terms: 3x + -3x = 0
7 + -2x = 31 + 0
7 + -2x = 31

Add '-7' to each side of the equation.
7 + -7 + -2x = 31 + -7

Combine like terms: 7 + -7 = 0
0 + -2x = 31 + -7
-2x = 31 + -7

Combine like terms: 31 + -7 = 24
-2x = 24

Divide each side by '-2'.
x = -12

Simplifying
x = -12

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