4-2(7+a)=8

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Solution for 4-2(7+a)=8 equation: 



4-2(7+a)=8

We move all terms to the left:

4-2(7+a)-(8)=0

We add all the numbers together, and all the variables

-2(a+7)+4-8=0

We add all the numbers together, and all the variables

-2(a+7)-4=0

We multiply parentheses

-2a-14-4=0

We add all the numbers together, and all the variables

-2a-18=0

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

-2a=18

a=18/-2

a=-9

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