1.

Simplify : $$\frac{{ - \frac{1}{2} - \frac{2}{3} + \frac{4}{5} - \frac{1}{3} + \frac{1}{5} + \frac{3}{4}}}{{\frac{1}{2} + \frac{2}{3} - \frac{4}{3} + \frac{1}{3} - \frac{1}{5} - \frac{4}{5}}}$$

A. $ - \frac{3}{{10}}$$
B. $ - \frac{{10}}{3}$$
C. $ - 2$$
D. ${\text{1}}$$
Answer» B. $ - \frac{{10}}{3}$$


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