Question

2 1/2 * 1 3/5, 3 7/9 * 1 1/17 пжжжжжжжж

Answer 1

1

21/2=10.5

13/5=2.6

10.5*2.6=27.3

2

37/9=4.1

11/17=0.65

4.1*0.65=2.665

Answer 2

To calculate these two multiplications involving mixed numbers, follow these steps:

1. Convert each mixed number to an improper fraction.
2. Multiply the two improper fractions.
3. If possible, simplify the result back to a mixed number.

Let's start with the first multiplication:

1. 2 1/2 * 1 3/5

Step 1: Convert to improper fractions 2 1/2 = (2 * 2 + 1) / 2 = 5/2 1 3/5 = (1 * 5 + 3) / 5 = 8/5

Step 2: Multiply the improper fractions (5/2) * (8/5) = (5 * 8) / (2 * 5) = 40 / 10

Step 3: Simplify to a mixed number (if possible) 40/10 = 4

So, the result is 4.

Now, let's proceed to the second multiplication:

2. 3 7/9 * 1 1/17

Step 1: Convert to improper fractions 3 7/9 = (3 * 9 + 7) / 9 = 34/9 1 1/17 = (1 * 17 + 1) / 17 = 18/17

Step 2: Multiply the improper fractions (34/9) * (18/17) = (34 * 18) / (9 * 17) = 612 / 153

Step 3: Simplify to a mixed number (if possible) To simplify the fraction further, find the greatest common divisor (GCD) between the numerator (612) and the denominator (153) and divide both by it. In this case, the GCD is 3.

(612/3) / (153/3) = 204 / 51

Now, check if the numerator (204) is greater than the denominator (51). If it is, divide the numerator by the denominator and write the remaining fraction as the new mixed number.

204 / 51 = 4 with a remainder of 0, so the result is 4.

So, the final result for the second multiplication is 4.

Summary of results:

1. 2 1/2 * 1 3/5 = 4
2. 3 7/9 * 1 1/17 = 4