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8=4+w/5.12
We move all terms to the left:
8-(4+w/5.12)=0
We add all the numbers together, and all the variables
-(w/5.12+4)+8=0
We get rid of parentheses
-w/5.12-4+8=0
We multiply all the terms by the denominator
-w-4*5.12+8*5.12=0
We add all the numbers together, and all the variables
-1w+20.48=0
We move all terms containing w to the left, all other terms to the right
-w=-20.48
w=-20.48/-1
w=20+0.48/1
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