Question

1 17/28*7/9+14/25*5/7

Answer 1

Ответ:

1 17/28 · 7/9 + 14/25 · 5/7 = ?

1) 1 17/28 · 7/9 = 45/28 · 7/9 = 5/4

2) 14/25 · 5/7 = 2/5

3) 5/4 + 2/5 = 25/20 + 8/20 = 33/20 = 1 13/20 = 1.65

Ответ: 1,65

Answer 2

Ответ:3,65

Пошаговое объяснение:

Answer 3

To evaluate the expression 1 17/28 * 7/9 + 14/25 * 5/7, we need to perform the operations in the correct order according to the rules of arithmetic.

First, let's simplify the multiplication within each fraction:

17/28 * 7/9 = (17 * 7) / (28 * 9) = 119/252

14/25 * 5/7 = (14 * 5) / (25 * 7) = 70/175

Now, let's simplify the addition of the fractions:

119/252 + 70/175

To add these fractions, we need to find a common denominator. In this case, the least common multiple (LCM) of 252 and 175 is 252.

119/252 + 70/175 = (119 * (175/175))/(252 * (175/175)) + (70 * (252/252))/(175 * (252/252))

Simplifying further:

= (119 * 175) / (252 * 175) + (70 * 252) / (175 * 252) = (20825/44100) + (17640/44100)

Now, let's add the fractions:

= (20825 + 17640) / 44100 = 38465 / 44100

The final result is 38465/44100.