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-2.9=y-0.45
We move all terms to the left:
-2.9-(y-0.45)=0
We get rid of parentheses
-y+0.45-2.9=0
We add all the numbers together, and all the variables
-1y-2.45=0
We move all terms containing y to the left, all other terms to the right
-y=2.45
y=2.45/-1
y=-2+0.45/1
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