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101.5-4y+49=180
We move all terms to the left:
101.5-4y+49-(180)=0
We add all the numbers together, and all the variables
-4y-29.5=0
We move all terms containing y to the left, all other terms to the right
-4y=29.5
y=29.5/-4
y=-7+1/2.6666666666667
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