X+21=4(x-4)

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Solution for X+21=4(x-4) equation: 



X+21=4(X-4)

We move all terms to the left:

X+21-(4(X-4))=0



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

4(X-4)

We multiply parentheses

4X-16

Back to the equation:

-(4X-16)



We get rid of parentheses

X-4X+16+21=0

We add all the numbers together, and all the variables

-3X+37=0

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

-3X=-37

X=-37/-3

X=12+1/3

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