Question

ДАЮ 100 БАЛЛОВ!!!. 1) -1 _1/5 - (-6 1/6)=2) 2_ 3/5 - 1/6=3) 18 ÷ (- 2/9)=4) -2 _ 1/4× (-3 _1/9)=

Answer 1

Ответ:

Пошаговое объяснение:

1) -1 1/5 - (-6 1/6)= - 1 1/5 + 6 1/6 = -1  6/30 + 6 5/30 = -1 6/30 + 5 35/30 =

= 4 29/30

2) 2 3/5 - 1/6= 2 18/30 - 5/30 = 2 13/30

3) 18 : (- 2/9)= 18 * (- 9/2) = - 81

4) -2 1/4 * (-3 1/9)= - 9/4 * (- 28/9) = 7

Answer 2

Пошаговое объяснение:

№1

-1. 1/5 - (-6. 1/6) = -1. 1/5 + 6. 1/6 = -1. 6/30 +

6. 5/30 = -1. 6/30 + 5. 35/30 = 4. 29/30

№2

2. 3/5 - 1/6 = 2. 18/30 - 5/30 = 2. 13/30

№3

18 : (-2/9) = 18 * (-9/2) = 9 * (-9/1) = -81/1 = -81

№4

-2. 1/4 * (-3. 1/9) = -9/4 * (-28/9) = -1/1 * (-7/1) = 7/1 = 7

Answer 3

1. To solve the expression -1 - 1/5 - (-6 1/6), we can simplify it step by step: -1 - 1/5 + 6 1/6

   First, let's convert the mixed numbers to improper fractions: -1 = -1/1 6 1/6 = 37/6

   Now, we have: -1/1 - 1/5 + 37/6

   To add these fractions, we need to find a common denominator. The least common multiple (LCM) of 1, 5, and 6 is 30. Let's convert the fractions: -30/30 - 6/30 + 185/30

   Now we can combine the fractions: (-30 - 6 + 185)/30 = 149/30

   Therefore, the result is 149/30.

2. To solve the expression 2 3/5 - 1/6, we can simplify it step by step: 2 3/5 = 13/5

   Now, we have: 13/5 - 1/6

   To subtract these fractions, we need to find a common denominator. The least common multiple (LCM) of 5 and 6 is 30. Let's convert the fractions: 78/30 - 5/30

   Now we can subtract the fractions: (78 - 5)/30 = 73/30

   Therefore, the result is 73/30.

3. To solve the expression 18 ÷ (-2/9), we can simplify it step by step: Dividing by a fraction is equivalent to multiplying by its reciprocal. The reciprocal of -2/9 is -9/2. So we have: 18 × (-9/2)

   Now, we can multiply the fractions: (18 × -9)/(2 × 1) = -162/2

   Simplifying the fraction, we get: -81

   Therefore, the result is -81.

4. To solve the expression -2 1/4 × (-3 1/9), we can simplify it step by step: -2 1/4 = -9/4 -3 1/9 = -28/9

   Now, we have: (-9/4) × (-28/9)

   Multiplying the fractions, we get: (9 × 28)/(4 × 9) = 252/36

   Simplifying the fraction, we get: 7

   Therefore, the result is 7.