8x+7=31-x

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Solution for 8x+7=31-x equation:


Simplifying
8x + 7 = 31 + -1x

Reorder the terms:
7 + 8x = 31 + -1x

Solving
7 + 8x = 31 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
7 + 8x + x = 31 + -1x + x

Combine like terms: 8x + x = 9x
7 + 9x = 31 + -1x + x

Combine like terms: -1x + x = 0
7 + 9x = 31 + 0
7 + 9x = 31

Add '-7' to each side of the equation.
7 + -7 + 9x = 31 + -7

Combine like terms: 7 + -7 = 0
0 + 9x = 31 + -7
9x = 31 + -7

Combine like terms: 31 + -7 = 24
9x = 24

Divide each side by '9'.
x = 2.666666667

Simplifying
x = 2.666666667

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