Question

-3/10 +7/15 +3/-20 +-9/10 +13/15 +13/-20​

Answer 1

Answer:

$\frac{ - 3}{10} + \frac{7}{15} - \frac{9}{10} + \frac{13}{15} - \frac{13}{20} \\ \frac{ - 3 - 9}{10} + \frac{7 + 13}{15} - \frac{13}{20} \\ - \frac{12}{10} + \frac{20}{15} - \frac{13}{20} \\ - \frac{ 6}{5} + \frac{4}{3} - \frac{13}{20} \\ \frac{ - 18 + 20}{15} - \frac{13}{20} \\ + \frac{2}{15} - \frac{13}{20} \\ \frac{8 - 39}{60} \\ \frac{ - 31}{60}$