7z+9z=-z-8-3z

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Solution for 7z+9z=-z-8-3z equation: 



7z+9z=-z-8-3z

We move all terms to the left:

7z+9z-(-z-8-3z)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

16z-(-4z-8)=0

We get rid of parentheses

16z+4z+8=0

We add all the numbers together, and all the variables

20z+8=0

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

20z=-8

z=-8/20

z=-2/5

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