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2.1=-4w+27.7
We move all terms to the left:
2.1-(-4w+27.7)=0
We get rid of parentheses
4w-27.7+2.1=0
We add all the numbers together, and all the variables
4w-25.6=0
We move all terms containing w to the left, all other terms to the right
4w=25.6
w=25.6/4
w=6+1/2.5
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