Question

( 2 1/5 + 2 1/4)*5-25 5/6

Answer 1

Ответ:

(3ц1/5+2ц1/4)×5-25ц5/6=(16/5+9/4)×5-25ц5/6=(64/20+45/20)×5-25ц5/6=109/20×5-25ц5/6=545/20-155/6=109/4-155/6=327/12-310/12=17/12

Answer 2

To solve this problem, we can follow the order of operations, which is:

1. First, we need to simplify the addition inside the parentheses.
2. Then, we can multiply the result by 5.
3. Finally, we subtract 25 5/6 from the product.

Let's start:

1. 2 1/5 + 2 1/4 = (11/5) + (9/4) = (44/20) + (45/20) = 89/20

2. (89/20) * 5 = 89/4

3. 89/4 - 25 5/6 = (89/4) - (485/6)

To subtract these two fractions, we need to find a common denominator. We can use the product of the two denominators, which is 4*6 = 24:

(89/4) - (485/6) = (89/4)(6/6) - (485/6)(4/4) = 534/24 - 1940/24 = -1406/24

Now, we can simplify the result:

-1406/24 = -703/12

Therefore, the final answer is -703/12.