Question

Помогите пожалуйста !!!

Answer 1

1) 14 5 2
__ * __ = _
15 7 3


2) 16 3 4
_ * _ = _
21 4 7

Answer 2

1.
$frac{3}{5} + frac{1}{3} = frac{9}{15} + frac{5}{15} = frac{14}{15}$
$frac{14}{15} times frac{5}{7} = frac{2}{3}$
2.
$frac{3}{7} + frac{1}{3} = frac{9}{21} + frac{7}{21} = frac{16}{21}$
$frac{16}{21} times frac{3}{4} = frac{4}{7}$