2x+21=3(x+2)

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



2x+21=3(x+2)

We move all terms to the left:

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



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

3(x+2)

We multiply parentheses

3x+6

Back to the equation:

-(3x+6)



We get rid of parentheses

2x-3x-6+21=0

We add all the numbers together, and all the variables

-1x+15=0

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

-x=-15

x=-15/-1

x=+15

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