7z+3z-1=9+8z

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Solution for 7z+3z-1=9+8z equation: 



7z+3z-1=9+8z

We move all terms to the left:

7z+3z-1-(9+8z)=0

We add all the numbers together, and all the variables

7z+3z-(8z+9)-1=0

We add all the numbers together, and all the variables

10z-(8z+9)-1=0

We get rid of parentheses

10z-8z-9-1=0

We add all the numbers together, and all the variables

2z-10=0

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

2z=10

z=10/2

z=5

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