Question

please solve these....... ​

Answer 1

Answer:

$i)$

$\frac{4}{7} - \frac{2}{5} \\ LCM \: of \: 7 \: and \: 5 = 35 \\ \frac{5(4) - 7(2)}{35} \\ \frac{20 - 14}{35}$

$= \frac{6}{35}$

$ii)$

$\frac{11}{26} + \frac{ - 9}{13} \\ \frac{11}{26} - \frac{9}{13} \\ LCM \: of \: 13 \: and \: 26 = 26 \\ \frac{11 - 2(9)}{26}$

$\frac{11 - 18}{26 } \\ = \frac{ - 7}{26}$

$iii)$

$\frac{ - 4}{15} \times \frac{25}{36} \\ \frac{ - 1}{3} \times \frac{5}{9} \\ = \frac{ - 5}{27}$

$iv)$

$- 8 \div \frac{4}{5} \\ \frac{ - 8}{1} \times \frac{5}{4} .........(by \: \: reciprocal) \\ \frac{ - 2}{1} \times \frac{5}{1 } \\ - 2 \times 5 \\ = - 10$

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