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-2.1+y/3=-11.7
We move all terms to the left:
-2.1+y/3-(-11.7)=0
We add all the numbers together, and all the variables
y/3+9.6=0
We multiply all the terms by the denominator
y+(9.6)*3=0
We add all the numbers together, and all the variables
y+28.8=0
We move all terms containing y to the left, all other terms to the right
y=-28.8
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