42=7(x+9)

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Solution for 42=7(x+9) equation: 



42=7(x+9)

We move all terms to the left:

42-(7(x+9))=0



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

7(x+9)

We multiply parentheses

7x+63

Back to the equation:

-(7x+63)



We get rid of parentheses

-7x-63+42=0

We add all the numbers together, and all the variables

-7x-21=0

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

-7x=21

x=21/-7

x=-3

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