y=21-3(6)

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Solution for y=21-3(6) equation: 



y=21-3(6)

We move all terms to the left:

y-(21-3(6))=0

We add all the numbers together, and all the variables

y-(-15)=0

We add all the numbers together, and all the variables

y+15=0

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

y=-15

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