12+7x=20+8x-x

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Solution for 12+7x=20+8x-x equation: 


Simplifying
12 + 7x = 20 + 8x + -1x

Combine like terms: 8x + -1x = 7x
12 + 7x = 20 + 7x

Add '-7x' to each side of the equation.
12 + 7x + -7x = 20 + 7x + -7x

Combine like terms: 7x + -7x = 0
12 + 0 = 20 + 7x + -7x
12 = 20 + 7x + -7x

Combine like terms: 7x + -7x = 0
12 = 20 + 0
12 = 20

Solving
12 = 20

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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