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

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Solution for 20+a=-7(1-4a) equation: 



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

a-(-7(-4a+1))+20=0



We calculate terms in parentheses: -(-7(-4a+1)), so:

-7(-4a+1)

We multiply parentheses

28a-7

Back to the equation:

-(28a-7)



We get rid of parentheses

a-28a+7+20=0

We add all the numbers together, and all the variables

-27a+27=0

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

-27a=-27

a=-27/-27

a=1

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