21z-2=85+9z

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Solution for 21z-2=85+9z equation: 



21z-2=85+9z

We move all terms to the left:

21z-2-(85+9z)=0

We add all the numbers together, and all the variables

21z-(9z+85)-2=0

We get rid of parentheses

21z-9z-85-2=0

We add all the numbers together, and all the variables

12z-87=0

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

12z=87

z=87/12

z=7+1/4

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