-5a+7a=-13

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Solution for -5a+7a=-13 equation: 



-5a+7a=-13

We move all terms to the left:

-5a+7a-(-13)=0

We add all the numbers together, and all the variables

2a+13=0

We move all terms containing a to the left, all other terms to the right

2a=-13

a=-13/2

a=-6+1/2

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