Solve for w
w=6.4
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-2w+17.9=5.1
Swap sides so that all variable terms are on the left hand side.
-2w=5.1-17.9
Subtract 17.9 from both sides.
-2w=-12.8
Subtract 17.9 from 5.1 to get -12.8.
w=\frac{-12.8}{-2}
Divide both sides by -2.
w=\frac{-128}{-20}
Expand \frac{-12.8}{-2} by multiplying both numerator and the denominator by 10.
w=\frac{32}{5}
Reduce the fraction \frac{-128}{-20} to lowest terms by extracting and canceling out -4.
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