Упражнение 336. Найдите произведение: 1) 5/7 · 4/9; 2) 7/20 · 10/21; 3) 8/9 · 27/32; 4) 28/25 · 49/46; 5) 34/86 · 43/51; 6) 7/18 · 90/77; 7) 63/64 · 48/91; 8) 19/100 · 5/38.

Question

Вопрос:

Accepted Answer

\(\frac57\cdot\frac49=\frac{20}{63}\).
\(\frac7{20}\cdot\frac{10}{21}=\frac16\).
\(\frac89\cdot\frac{27}{32}=\frac34\).
\(\frac{28}{25}\cdot\frac{49}{46}=\frac{686}{575}\).
\(\frac{34}{86}\cdot\frac{43}{51}=\frac13\).
\(\frac7{18}\cdot\frac{90}{77}=\frac5{11}\).
\(\frac{63}{64}\cdot\frac{48}{91}=\frac{27}{52}\).
\(\frac{19}{100}\cdot\frac5{38}=\frac1{40}\).

Ответ: