4a+5-7a=-13

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Solution for 4a+5-7a=-13 equation: 



4a+5-7a=-13

We move all terms to the left:

4a+5-7a-(-13)=0

We add all the numbers together, and all the variables

-3a+18=0

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

-3a=-18

a=-18/-3

a=+6

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