Question

выполните действия: 78 33/38+5/38-7 29/30-42-28 1/3+1 7/15+4 1/3=

Answer 1

$78 frac{33}{38} + frac{5}{38} - 7 frac{29}{30} - 42 - 28 frac{1}{3} + 1 frac{7}{15} + 4 frac{1}{3} \ \ 78 frac{33}{38} + frac{5}{38} = 78 frac{33+5}{38} = 78 frac{38}{38} = 79 \ \ 79 - 7 frac{29}{30} = 72 frac{29}{30} \ \ 72 frac{29}{30} - 42 = 30 frac{29}{30} \ \ 30 frac{29}{30} - 28 frac{1}{3} = 2 frac{29-10}{30} = 2 frac{19}{30} \ \ 2 frac{19}{30} + 1 frac{7}{15} = 3 frac{19+14}{30} = 3 frac{33}{30} = 4 frac{1}{10}$
$4 frac{1}{10} + 4 frac{1}{3} = 8 frac{3+10}{30} = 8 frac{1+1}{1} = 8 frac{2}{1} = 10$