3x+31=x+15

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Solution for 3x+31=x+15 equation:


Simplifying
3x + 31 = x + 15

Reorder the terms:
31 + 3x = x + 15

Reorder the terms:
31 + 3x = 15 + x

Solving
31 + 3x = 15 + 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 + 3x + -1x = 15 + x + -1x

Combine like terms: 3x + -1x = 2x
31 + 2x = 15 + x + -1x

Combine like terms: x + -1x = 0
31 + 2x = 15 + 0
31 + 2x = 15

Add '-31' to each side of the equation.
31 + -31 + 2x = 15 + -31

Combine like terms: 31 + -31 = 0
0 + 2x = 15 + -31
2x = 15 + -31

Combine like terms: 15 + -31 = -16
2x = -16

Divide each side by '2'.
x = -8

Simplifying
x = -8

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