Question

(0, 8 * 7 1/2 - 2 4/5) / (2 2/15) СРОЧНО

Answer 1

Пошаговое объяснение:

1) 0,8 * 7 1/2 = 8/10 * 15/2 = 4/2 * 3/1 = 12/2 = 6

2) 6 - 2 4/5 = 5 5/5 - 2 4/5 = 3 1/5

3) 3 1/5 : 2 2/15 = 16/5 : 32/15 = 16/5 * 15/32 = 1/1 * 3/2 = 3/2 = 1 1/2 или 1,5

Answer 2

To simplify the expression (0, 8 * 7 1/2 - 2 4/5) / (2 2/15), let's break it down step by step:

First, calculate the value inside the parentheses: 8 * 7 1/2 = 8 * (7 + 1/2) = 8 * 15/2 = 60

Next, calculate the value inside the parentheses on the right side: 2 4/5 = 2 + 4/5 = 10/5 + 4/5 = 14/5

Now, we have the expression: (0, 60 - 14/5) / (2 2/15)

Let's subtract 14/5 from 60: 60 - 14/5 = (300/5) - (14/5) = (300 - 14)/5 = 286/5

So, the expression becomes: (0, 286/5) / (2 2/15)

Now, let's work with the denominator. Convert the mixed number to an improper fraction: 2 2/15 = (2 * 15 + 2)/15 = (30 + 2)/15 = 32/15

Now, we have the expression: (0, 286/5) / (32/15)

To divide by a fraction, you can multiply by its reciprocal: (0, 286/5) * (15/32)

Now, multiply the numerators and denominators separately: (0 * 15)/(5 * 32) = 0/160

So, the final result is 0.