Question

А) -2 1/3 + 1,2 б) 3 1/5 - 5,7

Answer 1

Ответ:

Пошаговое объяснение:

а) -2 1/3 + 1,2 = -2 1/3 + 1 1/5 = -2 5/15 + 1 3/15 = -1 2/15

б) 3 1/5 - 5,7 = 3,2 - 5,7 = -2,5

Answer 2

Ответ:

А)  -21/3 = -7

-7+1.2= -5.8

б)31/5 =6.2

6.2-5.7=0.5

Пошаговое объяснение:

Answer 3

Let's solve the given expressions:

a) To calculate -2 1/3 + 1.2, we need to convert the mixed number -2 1/3 into an improper fraction.

-2 1/3 can be written as -2 + 1/3, which is equal to -6/3 + 1/3. Combining the fractions, we have (-6 + 1)/3 = -5/3.

Now we can add -5/3 and 1.2:

-5/3 + 1.2 = (1.2 * 3 + -5) / 3 = (3.6 - 5) / 3 = -1.4 / 3.

The result is -1.4/3.

b) To calculate 3 1/5 - 5.7, we need to convert the mixed number 3 1/5 into an improper fraction.

3 1/5 can be written as 3 + 1/5, which is equal to 15/5 + 1/5. Combining the fractions, we have (15 + 1)/5 = 16/5.

Now we can subtract 5.7 from 16/5:

16/5 - 5.7 = (16 - 5.7 * 5) / 5 = (16 - 28.5) / 5 = -12.5 / 5.

The result is -12.5/5, which can be simplified to -2.5.

Therefore, the solutions are: a) -1.4/3 b) -2.5