Question

1) ( 3/7 + 4/9 ) = ? 2) 15,2 : 1,9= ?

Answer 1

Ответ:

Пошаговое объяснение:

3/7+4/9=27/63+28/63=55/63

15,2:1,9=8

Answer 2

1) 3/7 + 4/9 = 27/63 + 28/63 = 55/63

2) 15,2 : 1,9 = 152/10 * 10/19 = 152/19 = 8

Answer 3

1. To add the fractions (3/7) and (4/9), you need to find a common denominator. The common denominator for 7 and 9 is 63.

To convert (3/7) to have a denominator of 63, multiply both the numerator and denominator by 9: (3/7) × (9/9) = 27/63.

To convert (4/9) to have a denominator of 63, multiply both the numerator and denominator by 7: (4/9) × (7/7) = 28/63.

Now that both fractions have the same denominator, you can add them: (27/63) + (28/63) = 55/63.

Therefore, (3/7) + (4/9) = 55/63.

2. To divide 15.2 by 1.9, you simply divide the first number by the second number.

15.2 ÷ 1.9 ≈ 8.

Therefore, 15.2 divided by 1.9 is approximately 8.