7-7a+4a=-13

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Solution for 7-7a+4a=-13 equation: 



7-7a+4a=-13

We move all terms to the left:

7-7a+4a-(-13)=0

We add all the numbers together, and all the variables

-3a+20=0

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

-3a=-20

a=-20/-3

a=6+2/3

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