Question

8 18/21+(5 8/21-3 2/21)​

Answer 1

Ответ:

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Пошаговое объяснение:

Надеюсь, все видно и понятно)

Answer 2

Ответ: 40,19047619047619

Пошаговое объяснение:

Answer 3

To solve this expression, you can follow the order of operations (PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication and Division, Addition and Subtraction).

Step 1: Solve the expression within the innermost parentheses: 5 8/21 - 3 2/21

To subtract these mixed numbers, you'll want to ensure they have a common denominator. The common denominator in this case is 21.

5 8/21 - 3 2/21 = (5 - 3) + (8/21 - 2/21) = 2 + (6/21)

Now, simplify 6/21 (which can be further simplified to 2/7):

2 + (6/21) = 2 + (2/7)

Step 2: Add the result from Step 1 to the first part of the expression:

8 18/21 + (2 + 2/7)

To add these mixed numbers, you'll again want to ensure they have a common denominator. In this case, the common denominator is 7.

8 18/21 + 2 + 2/7 = (8 + 2) + (18/21 + 2/7)

Now, simplify 18/21 (which can be further simplified to 6/7):

(8 + 2) + (6/7 + 2/7) = 10 + (8/7)

Now, add 10 and 8/7:

10 + (8/7) = 70/7 + 8/7

Finally, add the fractions:

(70/7) + (8/7) = (70 + 8)/7 = 78/7

So, the final result is:

8 18/21 + (5 8/21 - 3 2/21) = 78/7 or 11 1/7 when expressed as a mixed number.