y/2-12=9

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Solution for y/2-12=9 equation: 



y/2-12=9

We move all terms to the left:

y/2-12-(9)=0

We add all the numbers together, and all the variables

y/2-21=0

We multiply all the terms by the denominator


y-21*2=0

We add all the numbers together, and all the variables

y-42=0

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

y=42

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