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\frac{m\times 5}{2}-\frac{1}{2}+\frac{1}{5}-\frac{5}{2}
Divide m by \frac{2}{5} by multiplying m by the reciprocal of \frac{2}{5}.
\frac{m\times 5}{2}-\frac{5}{10}+\frac{2}{10}-\frac{5}{2}
Least common multiple of 2 and 5 is 10. Convert -\frac{1}{2} and \frac{1}{5} to fractions with denominator 10.
\frac{m\times 5}{2}+\frac{-5+2}{10}-\frac{5}{2}
Since -\frac{5}{10} and \frac{2}{10} have the same denominator, add them by adding their numerators.
\frac{m\times 5}{2}-\frac{3}{10}-\frac{5}{2}
Add -5 and 2 to get -3.
\frac{m\times 5}{2}-\frac{3}{10}-\frac{25}{10}
Least common multiple of 10 and 2 is 10. Convert -\frac{3}{10} and \frac{5}{2} to fractions with denominator 10.
\frac{m\times 5}{2}+\frac{-3-25}{10}
Since -\frac{3}{10} and \frac{25}{10} have the same denominator, subtract them by subtracting their numerators.
\frac{m\times 5}{2}+\frac{-28}{10}
Subtract 25 from -3 to get -28.
\frac{m\times 5}{2}-\frac{14}{5}
Reduce the fraction \frac{-28}{10} to lowest terms by extracting and canceling out 2.
\frac{5m\times 5}{10}-\frac{14\times 2}{10}
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 2 and 5 is 10. Multiply \frac{m\times 5}{2} times \frac{5}{5}. Multiply \frac{14}{5} times \frac{2}{2}.
\frac{5m\times 5-14\times 2}{10}
Since \frac{5m\times 5}{10} and \frac{14\times 2}{10} have the same denominator, subtract them by subtracting their numerators.
\frac{25m-28}{10}
Do the multiplications in 5m\times 5-14\times 2.
\frac{25m-28}{10}
Factor out \frac{1}{10}.
25m-28
Consider 25m-5+2-25. Multiply and combine like terms.
\frac{25m-28}{10}
Rewrite the complete factored expression.