Question

приведите дроби к наименьшему общему знаменателю: а) 13\14 и 17\21 б) 11\45 и 7\60 в) 7\30 и 1\6 г) 9\70 и 11\105.

Answer 1

Ответ:

1) 42 2)180 3) 30 4)210

Пошаговое объяснение:

14*3=42

21*2=42

45*4=180

60*3=180

6*5=30

30*1=30

105*2=210

70*3=210

Answer 2

Finding the Least Common Denominator

Answer 3

Finding the Least Common Denominator for Fractions

To find the least common denominator for each pair of fractions, we can follow these steps:

a) 13/14 and 17/21

To find the least common denominator for 13/14 and 17/21, we need to find the least common multiple (LCM) of the denominators, which is 14 and 21. The LCM of 14 and 21 is 42. Therefore, the fractions can be converted to have a common denominator of 42.

b) 11/45 and 7/60

For 11/45 and 7/60, the least common denominator can be found by calculating the LCM of 45 and 60, which is 180. Therefore, the fractions can be converted to have a common denominator of 180.

c) 7/30 and 1/6

The least common denominator for 7/30 and 1/6 can be obtained by finding the LCM of 30 and 6, which is 30. Therefore, the fractions can be converted to have a common denominator of 30.

d) 9/70 and 11/105

To find the least common denominator for 9/70 and 11/105, we can calculate the LCM of 70 and 105, which is 210. Therefore, the fractions can be converted to have a common denominator of 210.

Note: The least common denominator is used to make it easier to add, subtract, or compare fractions.

I hope this helps! If you have any more questions or need further assistance, feel free to ask.