Question

1-2/7=?
6-2 1/3=?

с объяснением

Answer 1

$1 - frac{2}{7} = frac{7}{7} - frac{2}{7} = frac{7 - 2}{7} = frac{5}{7} \ \ 6 - 2 frac{1}{3} = 6 - frac{ 2times 3 + 1}{3} = 6 - frac{7}{3} = frac{18}{3} - frac{7}{3} = frac{11}{3} = 3 frac{2}{3}$

Answer 2

1-2/7=7/7-2/7=(7-2)/7=5/7

6-2 1/3=5+1-2-1/3=5-2+3/3-1/3=3+(3-1)/3=3+2/3=3 2/3