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1.9=2y+8.5
We move all terms to the left:
1.9-(2y+8.5)=0
We get rid of parentheses
-2y-8.5+1.9=0
We add all the numbers together, and all the variables
-2y-6.6=0
We move all terms containing y to the left, all other terms to the right
-2y=6.6
y=6.6/-2
y=-3+0.6/2
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