7(-3a-4)=-28-2a

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Solution for 7(-3a-4)=-28-2a equation: 



7(-3a-4)=-28-2a

We move all terms to the left:

7(-3a-4)-(-28-2a)=0

We add all the numbers together, and all the variables

7(-3a-4)-(-2a-28)=0

We multiply parentheses

-21a-(-2a-28)-28=0

We get rid of parentheses

-21a+2a+28-28=0

We add all the numbers together, and all the variables

-19a=0

a=0/-19

a=0

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