7z+12=9z-50

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Solution for 7z+12=9z-50 equation: 



7z+12=9z-50

We move all terms to the left:

7z+12-(9z-50)=0

We get rid of parentheses

7z-9z+50+12=0

We add all the numbers together, and all the variables

-2z+62=0

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

-2z=-62

z=-62/-2

z=+31

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