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-12.8=-1.6+w/7
We move all terms to the left:
-12.8-(-1.6+w/7)=0
We add all the numbers together, and all the variables
-(w/7-1.6)-12.8=0
We get rid of parentheses
-w/7+1.6-12.8=0
We multiply all the terms by the denominator
-w+(1.6)*7-(12.8)*7=0
We add all the numbers together, and all the variables
-1w-78.4=0
We move all terms containing w to the left, all other terms to the right
-w=78.4
w=78.4/-1
w=-78+0.40000000000001/1
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