y/2+12=21

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Solution for y/2+12=21 equation: 



y/2+12=21

We move all terms to the left:

y/2+12-(21)=0

We add all the numbers together, and all the variables

y/2-9=0

We multiply all the terms by the denominator


y-9*2=0

We add all the numbers together, and all the variables

y-18=0

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

y=18

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