15=3(7x-9)

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Solution for 15=3(7x-9) equation: 



15=3(7x-9)

We move all terms to the left:

15-(3(7x-9))=0



We calculate terms in parentheses: -(3(7x-9)), so:

3(7x-9)

We multiply parentheses

21x-27

Back to the equation:

-(21x-27)



We get rid of parentheses

-21x+27+15=0

We add all the numbers together, and all the variables

-21x+42=0

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

-21x=-42

x=-42/-21

x=+2

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