3(z-7)=z+9

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



3(z-7)=z+9

We move all terms to the left:

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

We multiply parentheses

3z-(z+9)-21=0

We get rid of parentheses

3z-z-9-21=0

We add all the numbers together, and all the variables

2z-30=0

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

2z=30

z=30/2

z=15

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