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7=5+4w
We move all terms to the left:
7-(5+4w)=0
We add all the numbers together, and all the variables
-(4w+5)+7=0
We get rid of parentheses
-4w-5+7=0
We add all the numbers together, and all the variables
-4w+2=0
We move all terms containing w to the left, all other terms to the right
-4w=-2
w=-2/-4
w=1/2
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