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\frac{5}{2}\left(\frac{-3+4}{5}-\frac{3}{10}-\frac{4}{5}\right)
Since -\frac{3}{5} and \frac{4}{5} have the same denominator, add them by adding their numerators.
\frac{5}{2}\left(\frac{1}{5}-\frac{3}{10}-\frac{4}{5}\right)
Add -3 and 4 to get 1.
\frac{5}{2}\left(\frac{2}{10}-\frac{3}{10}-\frac{4}{5}\right)
Least common multiple of 5 and 10 is 10. Convert \frac{1}{5} and \frac{3}{10} to fractions with denominator 10.
\frac{5}{2}\left(\frac{2-3}{10}-\frac{4}{5}\right)
Since \frac{2}{10} and \frac{3}{10} have the same denominator, subtract them by subtracting their numerators.
\frac{5}{2}\left(-\frac{1}{10}-\frac{4}{5}\right)
Subtract 3 from 2 to get -1.
\frac{5}{2}\left(-\frac{1}{10}-\frac{8}{10}\right)
Least common multiple of 10 and 5 is 10. Convert -\frac{1}{10} and \frac{4}{5} to fractions with denominator 10.
\frac{5}{2}\times \frac{-1-8}{10}
Since -\frac{1}{10} and \frac{8}{10} have the same denominator, subtract them by subtracting their numerators.
\frac{5}{2}\left(-\frac{9}{10}\right)
Subtract 8 from -1 to get -9.
\frac{5\left(-9\right)}{2\times 10}
Multiply \frac{5}{2} times -\frac{9}{10} by multiplying numerator times numerator and denominator times denominator.
\frac{-45}{20}
Do the multiplications in the fraction \frac{5\left(-9\right)}{2\times 10}.
-\frac{9}{4}
Reduce the fraction \frac{-45}{20} to lowest terms by extracting and canceling out 5.