Question

(2-7 7\9*3\5):1 5\7-4 4\9

Answer 1

7 7/9 х 3/5 = 70/9 х 3/5 = 210/45 = 14/3
2 - 14/3 = 6/3 - 14/3 = - 8/3
- 8/3 : 1 5/7 = - 8/3 : 12/7 = - 8/3 х 7/12 = - 56/36
- 56/36 - 4 4/9 = - 56/36 - 40/9 = - 56/36 - 160/36 = - 216/36 = - 6
ответ: - 6

Answer 2

To solve this expression, we need to follow the order of operations, which is PEMDAS: parentheses, exponents, multiplication and division, addition and subtraction.

First, we can simplify the expression inside the parentheses:

2 - (7 7/9 * 3/5) = 2 - (55/9 * 3/5)

Next, we can simplify the multiplication:

2 - (55/9 * 3/5) = 2 - (165/45)

Then, we can simplify the division:

2 - (165/45) = 2 - (11/3)

Now, we can simplify the expression after the colon:

15/7 - 4 4/9 = (135/63) - (407/63)

Finally, we can perform the subtraction:

(2 - 11/3) / ((135/63) - (407/63)) = (-5/3) / (-272/63)

To divide by a fraction, we can multiply by its reciprocal:

(-5/3) / (-272/63) = (-5/3) * (63/-272)

We can simplify by canceling common factors:

(-5/3) * (63/-272) = -5/(-136) = 5/136

Therefore, the answer to the expression (2-7 7\9*3\5):1 5\7-4 4\9 is 5/136.