(3+10)+(-9)=13

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Solution for (3+10)+(-9)=13 equation: 


Simplifying
(3 + 10) + (-9) = 13

Combine like terms: 3 + 10 = 13
(13) + (-9) = 13
13 + (-9) = 13
13 + -9 = 13

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

Solving
4 = 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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