-2z-9=7

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Solution for -2z-9=7 equation: 



-2z-9=7

We move all terms to the left:

-2z-9-(7)=0

We add all the numbers together, and all the variables

-2z-16=0

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

-2z=16

z=16/-2

z=-8

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