3-y/9=21

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Solution for 3-y/9=21 equation: 



3-y/9=21

We move all terms to the left:

3-y/9-(21)=0

We add all the numbers together, and all the variables

-y/9-18=0

We multiply all the terms by the denominator


-y-18*9=0

We add all the numbers together, and all the variables

-1y-162=0

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

-y=162

y=162/-1

y=-162

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