3y+8=21

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Solution for 3y+8=21 equation:



3y+8=21
We move all terms to the left:
3y+8-(21)=0
We add all the numbers together, and all the variables
3y-13=0
We move all terms containing y to the left, all other terms to the right
3y=13
y=13/3
y=4+1/3

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