15+4z=3(7z-9)

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Solution for 15+4z=3(7z-9) equation: 



15+4z=3(7z-9)

We move all terms to the left:

15+4z-(3(7z-9))=0



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

3(7z-9)

We multiply parentheses

21z-27

Back to the equation:

-(21z-27)



We get rid of parentheses

4z-21z+27+15=0

We add all the numbers together, and all the variables

-17z+42=0

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

-17z=-42

z=-42/-17

z=2+8/17

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