x+12-x-15=9

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Solution for x+12-x-15=9 equation: 


Simplifying
x + 12 + -1x + -15 = 9

Reorder the terms:
12 + -15 + x + -1x = 9

Combine like terms: 12 + -15 = -3
-3 + x + -1x = 9

Combine like terms: x + -1x = 0
-3 + 0 = 9
-3 = 9

Solving
-3 = 9

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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