Question

Приведите дроби наименьшему общему знаминателю 5/7 и 1/2 7/20 и 1/15 помогите

Answer 1

Для первых дробей общий знаменатель 14: 10/14 и 7/14
в первой дроби домножаем числитель и знаменатель на 2, во второй - на 7
Для вторых дробей общий знаменатель 60: 21/60 и 4/60
в первой - на 3, во второй - на 4

Answer 2

1-к 14, т.е. 10/14 и 7/14 2-к 60,т.е. 21/60 и 4/60

Answer 3

Finding the Least Common Denominator for Fractions

To find the least common denominator for the fractions 5/7 and 1/2, and 7/20 and 1/15, we can follow these steps:

1. Find the Least Common Denominator for 5/7 and 1/2: - The least common denominator for 5/7 and 1/2 can be found by finding the least common multiple of the denominators, which are 7 and 2.

2. Find the Least Common Denominator for 7/20 and 1/15: - Similarly, the least common denominator for 7/20 and 1/15 can be found by finding the least common multiple of the denominators, which are 20 and 15.

Let's calculate the least common denominators for both sets of fractions.

Calculating the Least Common Denominator

1. For 5/7 and 1/2: - The least common denominator for 5/7 and 1/2 can be found by finding the least common multiple of 7 and 2. - The least common multiple of 7 and 2 is 14, so the least common denominator for 5/7 and 1/2 is 14.

2. For 7/20 and 1/15: - The least common denominator for 7/20 and 1/15 can be found by finding the least common multiple of 20 and 15. - The least common multiple of 20 and 15 is 60, so the least common denominator for 7/20 and 1/15 is 60.

Therefore, the least common denominators for the given fractions are 14 for 5/7 and 1/2, and 60 for 7/20 and 1/15.