42=7(z-)

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Solution for 42=7(z-) equation: 



42=7(z-)

We move all terms to the left:

42-(7(z-))=0

We add all the numbers together, and all the variables

-(7(+z))+42=0



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

7(+z)

We multiply parentheses

7z

Back to the equation:

-(7z)



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

-7z=-42

z=-42/-7

z=+6

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