3. Выполните умножение 6/25 * 15/17 = 9/26 * 13/18 = 5/11 * 22/15 = 7/12 * 8/9 =

Решение:

• \[ \frac{6}{25} \cdot \frac{15}{17} = \frac{6 \cdot 15}{25 \cdot 17} = \frac{90}{425} = \frac{18}{85} \]
• \[ \frac{9}{26} \cdot \frac{13}{18} = \frac{9 \cdot 13}{26 \cdot 18} = \frac{117}{468} = \frac{1}{4} \]
• \[ \frac{5}{11} \cdot \frac{22}{15} = \frac{5 \cdot 22}{11 \cdot 15} = \frac{110}{165} = \frac{2}{3} \]
• \[ \frac{7}{12} \cdot \frac{8}{9} = \frac{7 \cdot 8}{12 \cdot 9} = \frac{56}{108} = \frac{14}{27} \]

Ответ: 1) 18/85; 2) 1/4; 3) 2/3; 4) 14/27