Question

А) 14/15×15/49=б) 81/121×11/90=​

Answer 1

Ответ:

а)2/7

б)9/110

Объяснение:

............

Answer 2

Let's solve each expression step by step:

a) 14/15 × 15/49:

To multiply fractions, we multiply the numerators together and the denominators together. So, in this case, we have:

(14 × 15) / (15 × 49)

The numerator simplifies to 210 (14 × 15), and the denominator simplifies to 735 (15 × 49). Therefore, the expression becomes:

210/735

We can simplify this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 105:

210 ÷ 105 / 735 ÷ 105

This gives us:

2/7

Therefore, the result of 14/15 × 15/49 is 2/7.

b) 81/121 × 11/90:

Using the same process as before, we have:

(81 × 11) / (121 × 90)

The numerator simplifies to 891 (81 × 11), and the denominator simplifies to 10,890 (121 × 90). Therefore, the expression becomes:

891/10,890

We can simplify this fraction by dividing both the numerator and denominator by their greatest common divisor, which is 9:

891 ÷ 9 / 10,890 ÷ 9

This gives us:

99/1,210

Therefore, the result of 81/121 × 11/90 is 99/1,210.