Question

2. Какую дробь нельзя привести к знаменателю 45? А) 2/3 В) 4/15 С) 1/90 D) 5/9 Е) 15/563. Какую дробь можно привести к знаменателю 60?А) 8/9 В) 7/100 С) 1/4 D) 1/40 Е) 7/25Можно срочно❤️И с объяснением ❤️ пожалуйста​

Answer 1

1) 15/56, потому что 56 не можно нацело ни разделить, ни умножить на такое число, чтобы получить ровно 45.

2) 1/4 потому что 60:4=15. теперь умножаем 1 и 4 на 15.

1×15=15

4×15=60.

получится 15/60

Готово)

Answer 2

Ответ:

Е) 15/56, 56 нельзя разделить или умножить ни на какое число чтоб получить 45

в 3:

С) 1/4, 4 можно умножить на 15 и получится 60

Answer 3

The fraction that cannot be simplified to a denominator of 45 is C) 1/90.

To determine which fraction cannot be simplified to a denominator of 45, we need to find the greatest common divisor (GCD) of the numerator and the denominator. If the GCD is not equal to 1, then the fraction can be simplified.

Let's check each option:

A) 2/3: The GCD of 2 and 3 is 1, so this fraction can be simplified.

B) 4/15: The GCD of 4 and 15 is 1, so this fraction can be simplified.

C) 1/90: The GCD of 1 and 90 is 1, so this fraction cannot be simplified to a denominator of 45.

D) 5/9: The GCD of 5 and 9 is 1, so this fraction can be simplified.

E) 15/56: The GCD of 15 and 56 is 1, so this fraction can be simplified.

Therefore, the fraction that cannot be simplified to a denominator of 45 is C) 1/90. [[1]]

The fraction that can be simplified to a denominator of 60 is D) 1/40.

To find the fraction that can be simplified to a denominator of 60, we need to check which fractions have a GCD of 1 with 60.

Let's analyze each option:

A) 8/9: The GCD of 8 and 9 is 1, so this fraction can be simplified.

B) 7/100: The GCD of 7 and 100 is 1, so this fraction can be simplified.

C) 1/4: The GCD of 1 and 4 is 1, so this fraction can be simplified.

D) 1/40: The GCD of 1 and 40 is 1, so this fraction can be simplified to a denominator of 60.

E) 7/25: The GCD of 7 and 25 is 1, so this fraction can be simplified.

Therefore, the fraction that can be simplified to a denominator of 60 is D) 1/40. [[2]]