Question

9/10+4/9:(7-6 11/21)-1 2/3

Answer 1

Ответ:

3

Пошаговое объяснение:

Answer 2

Ответ:хм)

Пошаговое объяснение:

Смотри фото

Answer 3

Let's break down the expression step by step:

1. 9/10 + 4/9: Add the fractions on the left side of the expression.

   To add these fractions, we need a common denominator, which is the least common multiple of 10 and 9, which is 90.

   (9/10) * (9/9) = 81/90 (4/9) * (10/10) = 40/90

   Now add the fractions:

   81/90 + 40/90 = 121/90

2. (7-6 11/21): Calculate the value inside the parentheses.

   6 11/21 is the same as 6 + 11/21. So, we have:

   7 - (6 + 11/21) = 7 - (127/21) = 7 - 127/21 = (147 - 127)/21 = 20/21

3. 1 2/3: Convert the mixed number to an improper fraction.

   1 2/3 = 3/3 + 2/3 = 5/3

Now the expression becomes:

(121/90) : (20/21) - (5/3)

4. (121/90) : (20/21): Divide the fractions.

   To divide fractions, you invert the second fraction and multiply:

   (121/90) * (21/20) = (1331/1800)

5. (1331/1800) - (5/3): Subtract the fractions.

   To subtract the fractions, you need a common denominator, which is the least common multiple of 1800 and 3, which is 1800.

   (1331/1800) - (1000/600) = (1331 - 1000)/1800 = 331/1800

So, the result of the given expression is 331/1800.