-30=4z-72-2z

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Solution for -30=4z-72-2z equation: 



-30=4z-72-2z

We move all terms to the left:

-30-(4z-72-2z)=0

We add all the numbers together, and all the variables

-(2z-72)-30=0

We get rid of parentheses

-2z+72-30=0

We add all the numbers together, and all the variables

-2z+42=0

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

-2z=-42

z=-42/-2

z=+21

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