-(-3-4a)+8a=87

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Solution for -(-3-4a)+8a=87 equation: 



-(-3-4a)+8a=87

We move all terms to the left:

-(-3-4a)+8a-(87)=0

We add all the numbers together, and all the variables

-(-4a-3)+8a-87=0

We add all the numbers together, and all the variables

8a-(-4a-3)-87=0

We get rid of parentheses

8a+4a+3-87=0

We add all the numbers together, and all the variables

12a-84=0

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

12a=84

a=84/12

a=7

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