Question

-13/20+11/14+7/10+(-15)/7​

Answer 1

$\frac{ - 13}{20} + \frac{11}{4} + \frac{7}{10} + \frac{ - 15}{7} \\ = \frac{19}{140} + \frac{7}{10} + \frac{ - 15}{7} \\ = \frac{117}{140} + \frac{ - 15}{7} \\ = \frac{ - 183}{140}$