Question

А)2 1/2*1 1/5-2 2/15:2

Answer 1

$\displaystyle\bf\\1)\\\\2\frac{1}{2} \cdot 1\frac{1}{5} =\frac{5}{2} \cdot\frac{6}{5} =3\\\\2)\\\\2\frac{2}{15} :2=\frac{32}{15} \cdot\frac{1}{2} =\frac{16}{15} =1\frac{1}{15} \\\\3)\\\\3-1\frac{1}{15} =3-1-\frac{1}{15} =2-\frac{1}{15} =1+\frac{15}{15} -\frac{1}{15}=1\frac{14}{15}$

Answer 2

Ответ:

Пошаговое объяснение:

а)2 1/2 * 1 1/5 - 2 2/15 : 2 = 1 14/15

1) 2 1/2 * 1 1/5 = 5/2 * 6/5 = 3

2) 2 2/15 : 2 = 32/15 : 2 = 32/15 * 1/2 = 16/15 = 1 1/15

3) 3 - 1 1/15 = 2 15/15 - 1 1/15 = 1 14/15

Answer 3

To solve the expression, let's break it down step by step.

First, let's simplify the multiplication: 2 1/2 * 1 1/5.

To multiply mixed numbers, we need to convert them to improper fractions. 2 1/2 is equivalent to (2 * 2 + 1) / 2 = 5/2. 1 1/5 is equivalent to (1 * 5 + 1) / 5 = 6/5.

Now, we can multiply the fractions: (5/2) * (6/5) = (5 * 6) / (2 * 5) = 30/10 = 3.

Next, let's simplify the division: 2 2/15 : 2.

To divide mixed numbers, we again need to convert them to improper fractions. 2 2/15 is equivalent to (2 * 15 + 2) / 15 = 32/15.

Now, we can divide the fractions: (32/15) : 2 = 32/15 * 1/2 = (32 * 1) / (15 * 2) = 32/30 = 16/15.

Finally, let's subtract the two results: 3 - 16/15.

To subtract fractions, we need a common denominator, which in this case is 15.

3 can be written as 3/1, so we have (3/1) - (16/15) = (45/15) - (16/15) = (45 - 16) / 15 = 29/15.

Therefore, the result of the expression 2 1/2 * 1 1/5 - 2 2/15 : 2 is 29/15.