2z+9=7z+7

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



2z+9=7z+7

We move all terms to the left:

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

We get rid of parentheses

2z-7z-7+9=0

We add all the numbers together, and all the variables

-5z+2=0

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

-5z=-2

z=-2/-5

z=2/5

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