z+9z=81-4

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Solution for z+9z=81-4 equation: 



z+9z=81-4

We move all terms to the left:

z+9z-(81-4)=0

We add all the numbers together, and all the variables

z+9z-77=0

We add all the numbers together, and all the variables

10z-77=0

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

10z=77

z=77/10

z=7+7/10

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