Question

Simplify : 2/3 + (-4/5) + (-7/15) + (-15/40)

Answer 1

Answer:

$\frac{ 2}{3} + \frac{( - 4)}{5} + \frac{( - 7)}{15} + \frac{( - 15}{40} = \\ = \frac{2}{3} - \frac{4}{5} - \frac{7}{15} - \frac{15}{40} \\ \\ = \frac{2}{3} - \frac{7}{15} - ( \frac{4}{5} + \frac{15}{40} ) \\ \\ = \frac{10 - 7}{15} - ( \frac{32 + 15}{40} ) \\ \\ = \frac{3}{15} - ( \frac{47}{40} ) \\ \\ = \frac{24 - 141}{120} \\ \\ = \frac{ - 121}{120}$

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Answer 2

Answer:

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