Question

0,75:5/6+2,5•5/2-1:1/19

Answer 1

Ответ:

6.2223684210526 РОВНО МДА ПРИМЕРЧИК ТО

Пошаговое объяснение:

Answer 2

Ответ:

11 17/20, 11 целых 17/20

Answer 3

To solve the given expression, we'll follow the order of operations (PEMDAS/BODMAS). Here are the steps to evaluate the expression:

Step 1: Convert the decimal numbers to fractions: 0.75 = 3/4 2.5 = 5/2

Now the expression becomes: 3/4 : 5/6 + 5/2 * 5/2 - 1 : 1/19

Step 2: Simplify the multiplication and division from left to right: 3/4 : 5/6 = (3/4) * (6/5) = 18/20 = 9/10

5/2 * 5/2 = (5/2) * (5/2) = 25/4

1 : 1/19 = (1/1) * (19/1) = 19/1 = 19

The expression now becomes: 9/10 + 25/4 - 19

Step 3: Find a common denominator and add/subtract the fractions: To find a common denominator, we need to find the least common multiple (LCM) of 10 and 4, which is 20.

(9/10) + (25/4) - 19 = (9/10) + (25/4) - (19/1)

Now convert all fractions to have a denominator of 20: (9/10) + (25/4) - (19/1) = (9/10) * (2/2) + (25/4) * (5/5) - (19/1) * (20/20) = (18/20) + (125/20) - (380/20) = (18 + 125 - 380)/20 = (-237)/20

Step 4: Simplify the resulting fraction: (-237)/20 = -237/20

Therefore, the simplified value of the expression 0.75:5/6+2.5*5/2-1:1/19 is -237/20.