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3(2w+1)=9
We move all terms to the left:
3(2w+1)-(9)=0
We multiply parentheses
6w+3-9=0
We add all the numbers together, and all the variables
6w-6=0
We move all terms containing w to the left, all other terms to the right
6w=6
w=6/6
w=1
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