-x+31=3x+7

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


Simplifying
-1x + 31 = 3x + 7

Reorder the terms:
31 + -1x = 3x + 7

Reorder the terms:
31 + -1x = 7 + 3x

Solving
31 + -1x = 7 + 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.
31 + -1x + -3x = 7 + 3x + -3x

Combine like terms: -1x + -3x = -4x
31 + -4x = 7 + 3x + -3x

Combine like terms: 3x + -3x = 0
31 + -4x = 7 + 0
31 + -4x = 7

Add '-31' to each side of the equation.
31 + -31 + -4x = 7 + -31

Combine like terms: 31 + -31 = 0
0 + -4x = 7 + -31
-4x = 7 + -31

Combine like terms: 7 + -31 = -24
-4x = -24

Divide each side by '-4'.
x = 6

Simplifying
x = 6

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