12+1/9z=20

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Solution for 12+1/9z=20 equation: 



12+1/9z=20

We move all terms to the left:

12+1/9z-(20)=0



Domain of the equation: 9z!=0

z!=0/9

z!=0

z∈R



We add all the numbers together, and all the variables

1/9z-8=0

We multiply all the terms by the denominator


-8*9z+1=0

Wy multiply elements

-72z+1=0

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

-72z=-1

z=-1/-72

z=1/72

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