Question

выполни действия 1)(1/12+1/6):(3/8-1/4) 2) (1-4/9):(1/3-1/4)

Answer 1

1. $(frac{1}{12}+ frac{1}{6}):( frac{3}{8}- frac{1}{4})= (frac{1}{12}+ frac{2}{12}): (frac{3}{8}- frac{2}{8})= frac{3}{12}: frac{1}{8}= frac{3}{12}* frac{8}{1}= frac{3}{3}* frac{2}{1}= frac{6}{3}$ = 2
2. $(1- frac{4}{9}): (frac{1}{3}- frac{1}{4})= frac{5}{9} :( frac{4}{12}- frac{3}{12})= frac{5}{9}: frac{1}{12}= frac{5}{9} * frac{12}{1}= frac{60}{9}= frac{20}{3}=6 frac{2}{3}$