4z-z=2z-9-7z

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



4z-z=2z-9-7z

We move all terms to the left:

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

We add all the numbers together, and all the variables

4z-z-(-5z-9)=0

We add all the numbers together, and all the variables

3z-(-5z-9)=0

We get rid of parentheses

3z+5z+9=0

We add all the numbers together, and all the variables

8z+9=0

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

8z=-9

z=-9/8

z=-1+1/8

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