Question

(+8/15)+(-9/10)+(+5/6)+(-4/5)=

Answer 1

$( + \frac{8}{15}) + ( - \frac{9}{10}) + ( + \frac{5}{6}) + ( - \frac{4}{5}) = \frac{8}{15} - \frac{9}{10} + \frac{5}{6} - \frac{4}{5} = \frac{16 - 27 + 25 - 24}{30} = \frac{ - 10}{30} = - \frac{10}{30} = - \frac{1}{3}$