-1-3z=-7-z

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Solution for -1-3z=-7-z equation: 



-1-3z=-7-z

We move all terms to the left:

-1-3z-(-7-z)=0

We add all the numbers together, and all the variables

-3z-(-1z-7)-1=0

We get rid of parentheses

-3z+1z+7-1=0

We add all the numbers together, and all the variables

-2z+6=0

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

-2z=-6

z=-6/-2

z=+3

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