28-4=-9z+7z-2z

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Solution for 28-4=-9z+7z-2z equation: 



28-4=-9z+7z-2z

We move all terms to the left:

28-4-(-9z+7z-2z)=0

We add all the numbers together, and all the variables

-(-4z)+28-4=0

We add all the numbers together, and all the variables

-(-4z)+24=0

We get rid of parentheses

4z+24=0

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

4z=-24

z=-24/4

z=-6

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