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4.9=1.9+y
We move all terms to the left:
4.9-(1.9+y)=0
We add all the numbers together, and all the variables
-(y+1.9)+4.9=0
We get rid of parentheses
-y-1.9+4.9=0
We add all the numbers together, and all the variables
-1y+3=0
We move all terms containing y to the left, all other terms to the right
-y=-3
y=-3/-1
y=+3
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