7z+9(-8+-5z)=40+4z

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Solution for 7z+9(-8+-5z)=40+4z equation: 



7z+9(-8+-5z)=40+4z

We move all terms to the left:

7z+9(-8+-5z)-(40+4z)=0

We add all the numbers together, and all the variables

7z+9(-5z)-(4z+40)=0

We multiply parentheses

7z-45z-(4z+40)=0

We get rid of parentheses

7z-45z-4z-40=0

We add all the numbers together, and all the variables

-42z-40=0

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

-42z=40

z=40/-42

z=-20/21

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