Question

Найдите значение 5 11/12 - 2 1/6 - 1 3/4(15-4 3/20)-12-3 8/15​

Answer 1

Ответ:

.

Пошаговое объяснение:

Я не уверена...........

Answer 2

To calculate the given expression, follow these steps:

Step 1: Convert all mixed numbers to improper fractions.

5 11/12 = (5 * 12 + 11) / 12 = 71 / 12 2 1/6 = (2 * 6 + 1) / 6 = 13 / 6 1 3/4 = (1 * 4 + 3) / 4 = 7 / 4 4 3/20 = (4 * 20 + 3) / 20 = 83 / 20 3 8/15 = (3 * 15 + 8) / 15 = 53 / 15

Step 2: Simplify the expression inside the parentheses.

(15 - 4 3/20) = 15 - 83 / 20 = (300 - 83) / 20 = 217 / 20

Step 3: Evaluate the expression.

5 11/12 - 2 1/6 - 1 3/4(15-4 3/20)-12-3 8/15 = 71 / 12 - 13 / 6 - 7 / 4 * (217 / 20) - 12 - 53 / 15

Step 4: Perform the multiplication first.

= 71 / 12 - 13 / 6 - (7 * 217) / (4 * 20) - 12 - 53 / 15 = 71 / 12 - 13 / 6 - 217 / 80 - 12 - 53 / 15

Step 5: Find a common denominator to combine the fractions.

The common denominator for 12, 6, 80, and 15 is 120.

= (71 * 10) / 120 - (13 * 20) / 120 - (217 * 3) / 120 - (12 * 120) / 120 - (53 * 8) / 120 = 710 / 120 - 260 / 120 - 651 / 120 - 1440 / 120 - 424 / 120

Step 6: Combine the fractions.

= (710 - 260 - 651 - 1440 - 424) / 120 = (-2065) / 120

Step 7: Simplify the fraction, if possible.

= -2065 / 120

Step 8: Reduce the fraction to the simplest form.

= -41 / 3

So, the value of the expression is -41 / 3.