-9z-2=-7-8z

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Solution for -9z-2=-7-8z equation: 



-9z-2=-7-8z

We move all terms to the left:

-9z-2-(-7-8z)=0

We add all the numbers together, and all the variables

-9z-(-8z-7)-2=0

We get rid of parentheses

-9z+8z+7-2=0

We add all the numbers together, and all the variables

-1z+5=0

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

-z=-5

z=-5/-1

z=+5

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