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0.75-0.25y-2y=12
We move all terms to the left:
0.75-0.25y-2y-(12)=0
We add all the numbers together, and all the variables
-2.25y-11.25=0
We move all terms containing y to the left, all other terms to the right
-2.25y=11.25
y=11.25/-2.25
y=-5
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