Question

plz answer me this question ​

Answer 1

Answer:

7. 9/7

8. 49/20

May it could be helpful to you.

Thank you!

Answer 2

${ \footnotesize\sf7. Divide \: the \: sum \: of \: \: \dfrac{4}{7} \ \: and \: \: \dfrac{2}{7} \: \: by \: \: \dfrac{14}{21} .}$

Solution

$\sf \: \: \: \: \: \: \: \mapsto \bigg(\dfrac{4}{7} + \dfrac{2}{7} \bigg)\div \dfrac{14}{21}$

$\sf \: \: \: \: \: \: \: \mapsto \bigg(\dfrac{4 + 2}{7} \bigg) \times \dfrac{21}{14}$

$\sf \: \: \: \: \: \: \: \mapsto \dfrac{ \cancel {6}^{3}}{ \cancel {7}^{1} } \times \dfrac{ \cancel {21}^{3}}{ \cancel {14}^{7}}$

$\sf \: \: \: \: \: \: \: \mapsto \dfrac{9}{7}$

${ \footnotesize\sf8. Divide \: the \: product \: of \: 3\: \dfrac{1}{2} \ \: and \: 1\: \dfrac{1}{6} \: \: by \: 1\: \dfrac{2}{3} .}$

Solution

$\: \: \: \: \: \: \: \mapsto \: \: \sf \bigg({3} \: \dfrac{1}{2} \ \: \times \: 1\: \dfrac{1}{6} \bigg)\: \: \div \: 1\: \dfrac{2}{3}$

$\: \: \: \: \: \: \: \mapsto \: \: \sf \bigg( \: \dfrac{7}{2} \ \: \times \: \: \dfrac{7}{6} \bigg)\: \: \div \: \: \dfrac{5}{3}$

$\: \: \: \: \: \: \: \mapsto \: \: \sf \bigg( \: \dfrac{7 \times 7}{2 \times 6} \ \: \bigg)\: \: \times \: \: \dfrac{3}{5}$

$\: \: \: \: \: \: \: \mapsto \: \: \sf \: \dfrac{49}{ \cancel {12}^{4} } \times \dfrac{ \cancel {3}^{1} }{5}$

$\: \: \: \: \: \: \: \mapsto \: \: \sf \: \dfrac{49}{20 }$