-9+8z=7+4z

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Solution for -9+8z=7+4z equation: 



-9+8z=7+4z

We move all terms to the left:

-9+8z-(7+4z)=0

We add all the numbers together, and all the variables

8z-(4z+7)-9=0

We get rid of parentheses

8z-4z-7-9=0

We add all the numbers together, and all the variables

4z-16=0

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

4z=16

z=16/4

z=4

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