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=-2.8-3Y
We move all terms to the left:
-(-2.8-3Y)=0
We add all the numbers together, and all the variables
-(-3Y-2.8)=0
We get rid of parentheses
3Y+2.8=0
We move all terms containing Y to the left, all other terms to the right
3Y=-2.8
Y=-2.8/3
Y=-2.8/3
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