Question

2 1/5.×3 3/4 =... Дробью 9/10 ÷15 = ... дробью

Answer 1

11/5*15/4= 11*3/4= 33/4= 8 1/4 (или 8,25)
9/10:15= 9/10*1/15= 3/10*1/5= 3/50 (или 0,06)

Answer 2

To multiply 2 1/5 by 3 3/4, we need to convert both mixed numbers into improper fractions:

2 1/5 = (2 * 5 + 1) / 5 = 11/5 3 3/4 = (3 * 4 + 3) / 4 = 15/4

Now, we can multiply the fractions:

(11/5) * (15/4) = (11 * 15) / (5 * 4) = 165/20

To simplify this fraction, we can divide both the numerator and the denominator by their greatest common divisor, which is 5:

165/20 = (165 ÷ 5) / (20 ÷ 5) = 33/4

So, 2 1/5 * 3 3/4 = 33/4.

To divide 9/10 by 15, we can simply multiply the numerator by the reciprocal of the denominator:

9/10 ÷ 15 = (9/10) * (1/15) = (9 * 1) / (10 * 15) = 9/150

We can simplify this fraction by dividing both the numerator and the denominator by their greatest common divisor, which is 3:

9/150 = (9 ÷ 3) / (150 ÷ 3) = 3/50

So, 9/10 ÷ 15 = 3/50.