9z+8z=12+90

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Solution for 9z+8z=12+90 equation: 



9z+8z=12+90

We move all terms to the left:

9z+8z-(12+90)=0

We add all the numbers together, and all the variables

9z+8z-102=0

We add all the numbers together, and all the variables

17z-102=0

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

17z=102

z=102/17

z=6

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