Question

( 3supra11 + 9supra11 + 5supra11 - 5supra11 + 1 - 7supra11) × ( 15supra17 + 68supra17 - 8supra17 - 51supra17 - 7supra17)=​

Answer 1

$( \frac{3}{11} - \frac{9}{11} + \frac{5}{11} - \frac{5}{11} + 1 - \frac{7}{11} ) \times ( \frac{15}{17} + \frac{68}{17} - \frac{8}{17} - \frac{51}{17} - \frac{7}{17} ) =$

$= ( \frac{12}{11} + \frac{11}{11} - \frac{7}{11} ) \times ( \frac{75}{17} - \frac{51}{17} - \frac{7}{17} )$

$= \frac{16}{11} \times \frac{17}{17}$

$= > \frac{17}{17} = > 1$

$= \frac{16}{11} \times 1 = \frac{16}{11}$