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-9=-2.3+y
We move all terms to the left:
-9-(-2.3+y)=0
We add all the numbers together, and all the variables
-(y-2.3)-9=0
We get rid of parentheses
-y+2.3-9=0
We add all the numbers together, and all the variables
-1y-6.7=0
We move all terms containing y to the left, all other terms to the right
-y=6.7
y=6.7/-1
y=-6+0.7/1
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