Question

решите пожалуйста....

Answer 1

$frac{11}{40}:1 frac{7}{26}* frac{35}{39}= frac{11}{40}: frac{33}{26}* frac{35}{39}= frac{11}{40}* frac{26}{33}* frac{35}{39}= frac{1}{40}* frac{26}{3}* frac{35}{39}= frac{1}{20}* frac{13}{3}* frac{35}{39} \ \ = frac{1}{20}* frac{1}{3}* frac{35}{3}= frac{1}{4}* frac{1}{3}* frac{7}{3}= frac{7}{36}$