12-(5a+4)=13

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Solution for 12-(5a+4)=13 equation: 



12-(5a+4)=13

We move all terms to the left:

12-(5a+4)-(13)=0

We add all the numbers together, and all the variables

-(5a+4)-1=0

We get rid of parentheses

-5a-4-1=0

We add all the numbers together, and all the variables

-5a-5=0

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

-5a=5

a=5/-5

a=-1

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