Question

(1 1/9 - 5 1/5) : (-1/5 + 2,1)

Answer 1

(1 1/9- 5 1/5):(-1/5+2,1)= -2 26/171
1) 1 1/9 - 5 1/5 = 1 5/45 - 5 9/45 = -4 4/45 = -184/45
2) - 1/5 + 2,1 = -0,2+ 2,1= 1,9= 1 9/10= 19/10
3) -184/45 : 19/10 = -184/45 *10/19 = -184/9 *2/19 = -368/171 = -2 26/171

Answer 2

Давайте посчитаем выражение подробно:

(1 + 1/9 - 5 + 1/5) : (-1/5 + 2.1)

Step 1: Simplify the expression within the parentheses (1 + 1/9 - 5 + 1/5):

1 + 1/9 - 5 + 1/5

To add fractions, we need a common denominator. The common denominator for 9 and 5 is 45.

(45/45) + (5/45) - (225/45) + (9/45)

Now we can add the fractions:

(45 + 5 - 225 + 9) / 45

Step 2: Simplify the expression within the parentheses (-1/5 + 2.1):

To add a fraction and a decimal, we need to convert the fraction to a decimal. -1/5 is equal to -0.2.

-0.2 + 2.1

Step 3: Simplify the division expression:

(45 + 5 - 225 + 9) / (-0.2 + 2.1)

Now we can perform the addition and subtraction:

(-166) / (1.9)

Step 4: Simplify the division:

-87.3684

Therefore, the value of the expression (1 + 1/9 - 5 + 1/5) : (-1/5 + 2.1) is approximately -87.3684.