-7(a+1)=-7(7+4a)

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Solution for -7(a+1)=-7(7+4a) equation: 



-7(a+1)=-7(7+4a)

We move all terms to the left:

-7(a+1)-(-7(7+4a))=0

We add all the numbers together, and all the variables

-7(a+1)-(-7(4a+7))=0

We multiply parentheses

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



We calculate terms in parentheses: -(-7(4a+7)), so:

-7(4a+7)

We multiply parentheses

-28a-49

Back to the equation:

-(-28a-49)



We get rid of parentheses

-7a+28a+49-7=0

We add all the numbers together, and all the variables

21a+42=0

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

21a=-42

a=-42/21

a=-2

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