7x-2x+15=x+31

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Solution for 7x-2x+15=x+31 equation:


Simplifying
7x + -2x + 15 = x + 31

Reorder the terms:
15 + 7x + -2x = x + 31

Combine like terms: 7x + -2x = 5x
15 + 5x = x + 31

Reorder the terms:
15 + 5x = 31 + x

Solving
15 + 5x = 31 + 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.
15 + 5x + -1x = 31 + x + -1x

Combine like terms: 5x + -1x = 4x
15 + 4x = 31 + x + -1x

Combine like terms: x + -1x = 0
15 + 4x = 31 + 0
15 + 4x = 31

Add '-15' to each side of the equation.
15 + -15 + 4x = 31 + -15

Combine like terms: 15 + -15 = 0
0 + 4x = 31 + -15
4x = 31 + -15

Combine like terms: 31 + -15 = 16
4x = 16

Divide each side by '4'.
x = 4

Simplifying
x = 4

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