30-7z=2(z-3)

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Solution for 30-7z=2(z-3) equation: 



30-7z=2(z-3)

We move all terms to the left:

30-7z-(2(z-3))=0



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

2(z-3)

We multiply parentheses

2z-6

Back to the equation:

-(2z-6)



We get rid of parentheses

-7z-2z+6+30=0

We add all the numbers together, and all the variables

-9z+36=0

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

-9z=-36

z=-36/-9

z=+4

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