Question

Simplify:
-3/10 + 7/15 + 3/-20 + -9/10 + 13/15 + 13/-20

Answer 1

Answer:

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Answer 2

Answer:

$\frac{ - 3}{10} + \frac{7}{15} + \frac{3}{ - 20 } + \frac{ - 9}{10} + \frac{13}{15} + \frac{13}{ - 20} \\ = \frac{ - 3}{10} + \frac{7}{15} - \frac{3}{20} - \frac{9}{10} + \frac{13}{15} - \frac{13}{20} \\ = \frac{ - 18 + 28 - 9 - 54 + 52 - 39}{60} \\ = \frac{ - 40}{60} = \frac{ - 2}{3}$