Question

class 7 , ch rational numbers

Answer 1

Answer:

$\frac{ - 5}{10} + \frac{9}{7} + \frac{3}{20} - \frac{11}{14} \\ = \frac{ - 1}{2} + \frac{9}{7} + \frac{3}{20} - \frac{11}{14} \\ = \frac{ - 70 + 180 + 21 - 110}{140} \\ = \frac{201 - 180}{140} \\ = \frac{21}{140} \\ = \frac{3}{20}$

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