7z+9=1+8z

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Solution for 7z+9=1+8z equation: 



7z+9=1+8z

We move all terms to the left:

7z+9-(1+8z)=0

We add all the numbers together, and all the variables

7z-(8z+1)+9=0

We get rid of parentheses

7z-8z-1+9=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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