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4(28)-y+2(28)+3y+7=180
We move all terms to the left:
4(28)-y+2(28)+3y+7-(180)=0
We add all the numbers together, and all the variables
2y+483=0
We move all terms containing y to the left, all other terms to the right
2y=-483
y=-483/2
y=-241+1/2
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