6-15=9

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Solution for 6-15=9 equation: 


Simplifying
6 + -15 = 9

Combine like terms: 6 + -15 = -9
-9 = 9

Solving
-9 = 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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