Question

Вычислите:а)7/4-1= ; б) 3 3/4+2 5/8=; в) 5/24×8/15=: Помогите пожалуйста

Answer 1

вот сделано.все элементарно

Answer 2

Ответ:

а) 3/4 б) 6 3/8 в) 12

Пошаговое объяснение:

а) 7/4-1=1 3/4-1= 3/4

Б) 3 3/4+ 2 5/8=3 6/8+2 5/8=5 11/8=6 3/8

В)5/24*8/15= 1\4*3=1/12=12

Сокращаем 5 и 15 на 5, получается 1 и 3

Сокращаем 24 и 8 на 8, получается 3 и 1

Вроде так)

Answer 3

а) 7/4 - 1 = 1/4

б) 3 3/4 + 2 5/8 = To solve this problem, we need to first convert both mixed numbers to improper fractions, then add them together, and simplify the result.

3 3/4 = (3 x 4 + 3) / 4 = 15/4

2 5/8 = (2 x 8 + 5) / 8 = 21/8

Now we can add these fractions:

15/4 + 21/8 = 30/8 + 21/8 = 51/8

So, the answer is 6 3/8.

в) 5/24 × 8/15 = To multiply fractions, we simply multiply the numerators together and then multiply the denominators together:

(5 x 8) / (24 x 15) = 40 / 360

We can simplify this fraction by dividing both the numerator and denominator by their greatest common factor, which is 40:

40 / 360 = 1 / 9

So, the answer is 1/9.