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w(4.2)=3(4.2)-1
We move all terms to the left:
w(4.2)-(3(4.2)-1)=0
We add all the numbers together, and all the variables
w(4.2)-11.6=0
We multiply parentheses
4.2w-11.6=0
We move all terms containing w to the left, all other terms to the right
4.2w=11.6
w=11.6/4.2
w=2+2.6666666666667/3.5
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