-13=4+9

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Solution for -13=4+9 equation: 


Simplifying
-13 = 4 + 9

Combine like terms: 4 + 9 = 13
-13 = 13

Solving
-13 = 13

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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