Question

find

3/7 + -8/3
5/8 + 3/5
-4/9 - 6/5
5/7 ÷3/7 ​

Answer 1

$Answer: \\ </p><p> \frac{3}{7} + ( - \frac{8}{3} ) \\ = \frac{3}{7} - \frac{8}{3} \\ = \frac{(3 \times 3) - (8 \times 7) }{7 \times 3} \\ = \frac{9 -56}{21} \\ = - \frac{47}{21}</p><p> \\ \\ \\ \frac{5}{8} + \frac{3}{5} \\ = \frac{(5 \times 5) + (8 \times 3)}{8 \times 5} \\ = \frac{25 + 24}{40 } \\ = \frac{49}{40} </p><p></p><p>$