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12.2=4w-13.4
We move all terms to the left:
12.2-(4w-13.4)=0
We get rid of parentheses
-4w+13.4+12.2=0
We add all the numbers together, and all the variables
-4w+25.6=0
We move all terms containing w to the left, all other terms to the right
-4w=-25.6
w=-25.6/-4
w=6+1/2.5
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