66. Найдите значение частного а: b: 1) а = 5 : 7 : 13, b = 7. 13; 4) а = 2 : 2 : 41, b = 2 : 41; 2) a = 11. 13. 41, b = 11.41; 5) a = 3. 3. 29, b = 3:29; 3) а = 7 : 3 : 19, b = 7. 19; 6) а = 2 : 11 : 37, b = 2 : 37.
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Ответ:
2) 2 : 2 : 3 : 7 = \frac{1}{21}
21
1
Решение: 1:3*\frac{1}{7}
7
1
\frac{1}{3}
3
1
*\frac{1}{7}
7
1
= \frac{1}{21}
21
1
4) 2 - 2 - 2 - 5 = -7.
6) 2*3*3*11 = 198.
2*3^{2}3
2
*11
2*9*11
18*11
=198.