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0.86y-2.5y-0.91=0.79
We move all terms to the left:
0.86y-2.5y-0.91-(0.79)=0
We add all the numbers together, and all the variables
-1.64y-1.7=0
We move all terms containing y to the left, all other terms to the right
-1.64y=1.7
y=1.7/-1.64
y=-1+0.06/1.64
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