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-12.7=y+-3.4
We move all terms to the left:
-12.7-(y+-3.4)=0
We add all the numbers together, and all the variables
-(y-3.4)-12.7=0
We get rid of parentheses
-y+3.4-12.7=0
We add all the numbers together, and all the variables
-1y-9.3=0
We move all terms containing y to the left, all other terms to the right
-y=9.3
y=9.3/-1
y=-9+0.3/1
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