-7-9=-15

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Solution for -7-9=-15 equation: 


Simplifying
-7 + -9 = -15

Combine like terms: -7 + -9 = -16
-16 = -15

Solving
-16 = -15

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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