20=4(a+4)

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Solution for 20=4(a+4) equation: 



20=4(a+4)

We move all terms to the left:

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



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

4(a+4)

We multiply parentheses

4a+16

Back to the equation:

-(4a+16)



We get rid of parentheses

-4a-16+20=0

We add all the numbers together, and all the variables

-4a+4=0

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

-4a=-4

a=-4/-4

a=1

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