11/28*7/33 В) 1 8/25 * 1 4/11 Г ) 3 5/7 * 1 1/13

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вопрос

To solve these multiplication problems, we need to multiply the fractions and simplify the result.

1) 11/28 7/33
First, multiply the numerators together: 11 7 = 77
Then, multiply the denominators together: 28 33 = 924
So, 11/28 7/33 = 77/924

2) 1 8/25 1 4/11
First, convert the mixed numbers to improper fractions:
1 8/25 = 25/25 + 8/25 = 33/25
1 4/11 = 11/11 + 4/11 = 15/11
Multiply the fractions: 33/25 15/11 = (3315) / (2511) = 495/275
Simplify the result: 495/275 = 9/5

3) 3 5/7 1 1/13
First, convert the mixed numbers to improper fractions:
3 5/7 = 7/7 3 + 5/7 = 26/7
1 1/13 = 13/13 1 + 1/13 = 14/13
Multiply the fractions: 26/7 14/13 = (2614) / (713) = 364/91
Simplify the result: 364/91 = 4

Therefore, the answers are:
1) 11/28 7/33 = 77/924
2) 1 8/25 1 4/11 = 9/5
3) 3 5/7 * 1 1/13 = 4