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4(7+3y)=-y(3+9)
We move all terms to the left:
4(7+3y)-(-y(3+9))=0
We add all the numbers together, and all the variables
4(3y+7)-(-y12)=0
We multiply parentheses
12y-(-y12)+28=0
We get rid of parentheses
12y+y12+28=0
We add all the numbers together, and all the variables
y^12+12y+28=0
We do not support eypression: y^12
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