4+9=-8+-13

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Solution for 4+9=-8+-13 equation: 


Simplifying
4 + 9 = -8 + -13

Combine like terms: 4 + 9 = 13
13 = -8 + -13

Combine like terms: -8 + -13 = -21
13 = -21

Solving
13 = -21

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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