Question

вычислите 1 Целая 1/5+3 целых 4/5/(2 целых 5/18-5 целых 1/12+4 целых 2/9)

Answer 1

$1 frac{1}{5} +3 frac{4}{5} : (2 frac{5}{18} -5 frac{1}{12} +4 frac{2}{9} ) = ?$

$2 frac{5}{18} -5 frac{1}{12} +4 frac{2}{9} = frac{41}{18} - frac{61}{12} + frac{38}{9} = frac{82}{36} - frac{183}{36} + frac{152}{36} = frac{51}{36} = frac{17}{12}$

$1 frac{1}{5} +3 frac{4}{5} = frac{6}{5} + frac{19}{5} = frac{25}{5} =5$

$frac{5}{1} : frac{17}{12} = frac{5}{1} * frac{12}{17} = frac{60}{17} =3 frac{9}{17}$

Ответ: $3 frac{9}{17}$

Answer 2

       (1 1/5+3 4/5) / (2 5/18 - 5 1/12+4 2/9)=3 9/17

1)  1 1/5+3 4/5=4 5/5=5
2)   2 5/18-5 1/12+4 2/9=2 5/18+4 4/18 - 5 1/12=6 9/18 - 5 1/12=6 1/2 - 5 1/12=6 6/12 - 5 1/12=1 5/12
3)   5 : 1 5/12=5 * 12/17=60/17=3 9/17