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2y+4=-8-y
We move all terms to the left:
2y+4-(-8-y)=0
We add all the numbers together, and all the variables
2y-(-1y-8)+4=0
We get rid of parentheses
2y+1y+8+4=0
We add all the numbers together, and all the variables
3y+12=0
We move all terms containing y to the left, all other terms to the right
3y=-12
y=-12/3
y=-4
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