4x-21=2(x+3)

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Solution for 4x-21=2(x+3) equation: 



4x-21=2(x+3)

We move all terms to the left:

4x-21-(2(x+3))=0



We calculate terms in parentheses: -(2(x+3)), so:

2(x+3)

We multiply parentheses

2x+6

Back to the equation:

-(2x+6)



We get rid of parentheses

4x-2x-6-21=0

We add all the numbers together, and all the variables

2x-27=0

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

2x=27

x=27/2

x=13+1/2

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