-2z=-7-z

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



-2z=-7-z

We move all terms to the left:

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

We add all the numbers together, and all the variables

-2z-(-1z-7)=0

We get rid of parentheses

-2z+1z+7=0

We add all the numbers together, and all the variables

-1z+7=0

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

-z=-7

z=-7/-1

z=+7

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