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w+(3w-4)=75
We move all terms to the left:
w+(3w-4)-(75)=0
We get rid of parentheses
w+3w-4-75=0
We add all the numbers together, and all the variables
4w-79=0
We move all terms containing w to the left, all other terms to the right
4w=79
w=79/4
w=19+3/4
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