Question

обчисліть вираз ............

Answer 1

$(3 frac{3}{4}* frac{3}{5}-7 frac{1}{2}:27+1 frac{2}{9}):(3 frac{1}{6}-1 frac{1}{4})=1 frac{10}{69}$
1) $3 frac{3}{4}* frac{3}{5}= frac{15}{4}* frac{3}{5}= frac{9}{4}=2 frac{1}{4}$
2)$7 frac{1}{2}:27= frac{15}{2*27}= frac{5}{18}$
3) $2 frac{1}{4}-frac{5}{18}+1 frac{2}{9}=2 frac{9}{36}- frac{10}{36}+ frac{8}{36}=2 frac{17}{36}- frac{10}{36}=2 frac{7}{36}$
4) $3 frac{1}{6}-1 frac{1}{4}=3 frac{2}{12}-1 frac{3}{12}=2 frac{14}{12}-1 frac{3}{12}=1 frac{11}{12}$
5)$2 frac{7}{36}:1 frac{11}{12}= frac{79}{36}* frac{12}{23}= frac{79}{69}=1 frac{10}{69}$