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8w+9.1=-3.7
We move all terms to the left:
8w+9.1-(-3.7)=0
We add all the numbers together, and all the variables
8w+12.8=0
We move all terms containing w to the left, all other terms to the right
8w=-12.8
w=-12.8/8
w=-1+1/1.6666666666667
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