-9=-7z+8

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



-9=-7z+8

We move all terms to the left:

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

We get rid of parentheses

7z-8-9=0

We add all the numbers together, and all the variables

7z-17=0

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

7z=17

z=17/7

z=2+3/7

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