7z-10=10+9z

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Solution for 7z-10=10+9z equation: 



7z-10=10+9z

We move all terms to the left:

7z-10-(10+9z)=0

We add all the numbers together, and all the variables

7z-(9z+10)-10=0

We get rid of parentheses

7z-9z-10-10=0

We add all the numbers together, and all the variables

-2z-20=0

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

-2z=20

z=20/-2

z=-10

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