9x+12-2x-5-7x=20

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Solution for 9x+12-2x-5-7x=20 equation: 


Simplifying
9x + 12 + -2x + -5 + -7x = 20

Reorder the terms:
12 + -5 + 9x + -2x + -7x = 20

Combine like terms: 12 + -5 = 7
7 + 9x + -2x + -7x = 20

Combine like terms: 9x + -2x = 7x
7 + 7x + -7x = 20

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

Solving
7 = 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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