7=z-1

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Solution for 7=z-1 equation: 



7=z-1

We move all terms to the left:

7-(z-1)=0

We get rid of parentheses

-z+1+7=0

We add all the numbers together, and all the variables

-1z+8=0

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

-z=-8

z=-8/-1

z=+8

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