-4z+9=-7z

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Solution for -4z+9=-7z equation: 



-4z+9=-7z

We move all terms to the left:

-4z+9-(-7z)=0

We get rid of parentheses

-4z+7z+9=0

We add all the numbers together, and all the variables

3z+9=0

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

3z=-9

z=-9/3

z=-3

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