-7z+9=9-7z

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



-7z+9=9-7z

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

=0

z=0/1

z=0

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