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200=500-25w
We move all terms to the left:
200-(500-25w)=0
We add all the numbers together, and all the variables
-(-25w+500)+200=0
We get rid of parentheses
25w-500+200=0
We add all the numbers together, and all the variables
25w-300=0
We move all terms containing w to the left, all other terms to the right
25w=300
w=300/25
w=12
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