-2(-7+4)+9=-13

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Solution for -2(-7+4)+9=-13 equation: 


Simplifying
-2(-7 + 4) + 9 = -13

Combine like terms: -7 + 4 = -3
-2(-3) + 9 = -13

Multiply -2 * -3
6 + 9 = -13

Combine like terms: 6 + 9 = 15
15 = -13

Solving
15 = -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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