Question

Номер 647 пожалуйста помогите срочно!!!

Answer 1

1)
$= 3 frac{3}{4} (1 frac{2}{3} + frac{1}{3} ) = 3 frac{3}{4} times 1 frac{3}{3} = \ frac{15}{4} times 2 = frac{15 times 2}{4} = frac{15}{2} = 7 frac{1}{2}$
2)
$= 1 frac{2}{5} (2 frac{5}{7} - frac{3}{14} ) = 1 frac{2}{5} (2 frac{10}{14} - frac{3}{14} ) = \ 1 frac{2}{5} times 2 frac{7}{14} = frac{7}{5} times frac{5}{2} = frac{7}{2} = 3 frac{1}{2}$
3)
$= frac{1}{9} (1 frac{5}{6} + 1 frac{1}{6} ) = frac{1}{9} times 2 frac{6}{6} = \ frac{1}{9} times 3 = frac{3}{9} = frac{1}{3}$
4)
$= frac{3}{5} (1 frac{3}{8} - frac{1}{8} ) = frac{3}{5} times 1 frac{2}{8} = frac{3}{5} times frac{5}{4} = frac{3}{4}$