Question

Помогите пожалуйста 4/6 * 17/21+17/21 * 5/6

Answer 1

4/6×17/21+17/21×5/6

1) 17/21×4/6=68/126

2)17/21×5/6=85/126

3)68/126+85/126=153/126= 1 27/126

Answer 2

Ответ:

1 3/14

$frac{4}{6} times frac{17}{21} + frac{17}{21} times frac{5}{6}$

$frac{4}{6} times frac{17}{21} = frac{2}{3} times frac{17}{21} = frac{34}{63}$

$frac{17}{21} times frac{5}{6} = frac{85}{126}$

$frac{34}{63} + frac{85}{126} = frac{85}{126} + frac{68}{126} = frac{153}{126} = frac{17}{14} = 1 frac{3}{14}$