-7=z+2

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Solution for -7=z+2 equation: 



-7=z+2

We move all terms to the left:

-7-(z+2)=0

We get rid of parentheses

-z-2-7=0

We add all the numbers together, and all the variables

-1z-9=0

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

-z=9

z=9/-1

z=-9

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