Question

Решите пожалуйста))по действиям

Answer 1

$1. \ frac{7}{9} *1 frac{2}{7} -3.72+8=5.28\ \ 1) frac{7}{9} *1 frac{2}{7} = frac{7}{9} * frac{9}{7} = frac{7*9}{9*7} =1 \ 2)1-3.72=-2.72 \ 3)-2.72+8=8-2.72=5.28$

$2. \ 1)1 frac{2}{3} :5+0.175* frac{20}{7}= frac{5}{6} \ 1)1 frac{2}{3} :5= frac{5}{3} * frac{1}{5} = frac{5}{3*5} = frac{1}{3} \ 0.175 = frac{175}{1000} = frac{35}{200} = frac{7}{40} \ 2) frac{7}{40} * frac{20}{7} = frac{7*20}{40*7} = frac{1}{2} \ 3) frac{1}{3} + frac{1}{2} = frac{2}{6} + frac{3}{6} = frac{5}{6}$