Question

EVALUATE THE FOLLOWING​

Answer 1

${(7 \div 9)}^{ - 3} \times {(9 \div 7)}^{ - 4} \\ = > \: {(7 \div 9)}^{ - 3} \times {(7 \div 9)}^{4} \\ = > {(7 \div 9)}^{ - 3 + 4 } \\ = > {(7 \div 9)}^{1}$

=> our answer 7/9

Answer 2

$\huge( \small { \frac{7}{9} \huge ) \small}^{( - 3)} \times { \huge( \small\frac{9}{7} \huge) \small }^{( - 4)} \\ \\ \implies { \huge( \small\frac{9}{7} \huge) }^{3} \times { \huge( \small\frac{7}{9} \huge)}^{4} \\ \\ \implies \frac{ \cancel{9} \times\cancel{ 9} \times\cancel{ 9}}{\cancel{7 }\times \cancel{7 }\times \cancel{7}} \times \frac{\cancel{7 }\times \cancel{7 }\times\cancel{ 7 }\times 7}{\cancel{9} \times\cancel{ 9 }\times \cancel{9} \times 9} \\ \\ \implies \frac{7}{9}$