7-7z=-9z+2+1

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Solution for 7-7z=-9z+2+1 equation: 



7-7z=-9z+2+1

We move all terms to the left:

7-7z-(-9z+2+1)=0

We add all the numbers together, and all the variables

-7z-(-9z+3)+7=0

We get rid of parentheses

-7z+9z-3+7=0

We add all the numbers together, and all the variables

2z+4=0

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

2z=-4

z=-4/2

z=-2

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