3z-21=2z+4

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Solution for 3z-21=2z+4 equation: 



3z-21=2z+4

We move all terms to the left:

3z-21-(2z+4)=0

We get rid of parentheses

3z-2z-4-21=0

We add all the numbers together, and all the variables

z-25=0

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

z=25

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