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w+2(w+3)=54
We move all terms to the left:
w+2(w+3)-(54)=0
We multiply parentheses
w+2w+6-54=0
We add all the numbers together, and all the variables
3w-48=0
We move all terms containing w to the left, all other terms to the right
3w=48
w=48/3
w=16
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