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2.5w+w=40
We move all terms to the left:
2.5w+w-(40)=0
We add all the numbers together, and all the variables
3.5w-40=0
We move all terms containing w to the left, all other terms to the right
3.5w=40
w=40/3.5
w=11+1/2.3333333333333
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