Question

помогите пожалуйста
4 8/9+6 7/8÷(5 11/12-3 5/6)×1 2/3+7 1/18=?

Answer 1

$4 frac{8}{9} +6 frac{7}{8} :(5 frac{11}{12} -3 frac{5}{6} ) * 1 frac{2}{3} +7 frac{1}{18} =17 frac{4}{9}$

$1) 5 frac{11}{12} -3 frac{5}{6}= 5 frac{11}{12} -3 frac{10}{12} = 2 frac{1}{12} \ \ 2) 6 frac{7}{8} : 2 frac{1}{12} = frac{55}{8} * frac{12}{25} = frac{11*3}{2*5} = frac{33}{10} =3 frac{3}{10} \ \ 3) 3 frac{3}{10} * 1 frac{2}{3} = frac{33*5}{10*3} = frac{11*1}{2*1} = frac{11}{2} = 5 frac{1}{2}$
$4) 4 frac{8}{9} +5 frac{1}{2} = frac{44*2}{9*2} + frac{11*9}{2*9} = frac{88+99}{18} = frac{187}{18} = 10frac{7}{18} \ \ 5) 10frac{7}{18} + 7 frac{1}{18} =17 frac{8}{18} = 17frac{4}{9}$