Question

ПОЖАЛУЙСТА ПОМОГИТЕ 1)(2,6:(-13)+1,2):(-0,1); 2)7/8:(-2 1/4):5/6:(2 1/2):(-6/25); 3) (4 3/7)•1 4/31+(-6 2/3):3 1/3

Answer 1

Ответ:

-8

8,9

9.................юбб

Answer 2

1. Let's break down the expression step by step:

(2.6 : (-13) + 1.2) : (-0.1)

Step 1: Evaluate the division inside the parentheses: 2.6 : (-13) = -0.2

Step 2: Add 1.2 to the result: -0.2 + 1.2 = 1

Step 3: Evaluate the division outside the parentheses: 1 : (-0.1) = -10

Therefore, the value of the expression is -10.

2. Let's break down the expression step by step:

7/8 : (-2 1/4) : 5/6 : (2 1/2) : (-6/25)

Step 1: Convert mixed numbers to improper fractions: -2 1/4 = -9/4 2 1/2 = 5/2

Step 2: Evaluate the divisions from left to right:

7/8 : (-9/4) = -7/18

-7/18 : 5/6 = -7/15

-7/15 : 5/2 = -14/15

-14/15 : (-6/25) = 70/21 = 10/3

Therefore, the value of the expression is 10/3.

3. Let's break down the expression step by step:

(4 3/7) * 1 4/31 + (-6 2/3) : 3 1/3

Step 1: Convert mixed numbers to improper fractions: 4 3/7 = 31/7 1 4/31 = 35/31 -6 2/3 = -20/3 3 1/3 = 10/3

Step 2: Perform the multiplication first: (31/7) * (35/31) = 35/7 = 5

Step 3: Perform the addition: 5 + (-20/3) = 5 - (20/3) = 5 - (20/3) = 5 - 6 2/3 = -1 2/3 = -5/3

Step 4: Perform the division: (-5/3) : (10/3) = (-5/3) * (3/10) = -1/2

Therefore, the value of the expression is -1/2.