Question

(-2 1/7-5 5/14)-(-15,38+4,4)​

Answer 1

Ответ:

-23,18

Пошаговое объяснение:

(-21/7-5/14)-(-15,38+4,4)=(-3-0,3)-(19,88)=-3,3-,19,88=-23,18

Answer 2

To calculate the expression (-2 1/7 - 5 5/14) - (-15,38 + 4,4), we'll first simplify each part separately and then perform the subtraction:

1. Simplify (-2 1/7 - 5 5/14):

-2 1/7 can be written as -15/7, and 5 5/14 can be written as 75/14.

So, the expression becomes:

(-15/7 - 75/14)

2. Simplify (-15,38 + 4,4):

-15,38 and 4,4 are decimal numbers. You can directly subtract them:

-15,38 - 4,4 = -19.78

Now, we have:

(-15/7 - 75/14) - (-19.78)

Now, let's perform the subtraction:

(-15/7 - 75/14) + 19.78

To add these fractions and decimals, you need to find a common denominator for the fractions. The common denominator for 7 and 14 is 14. So, we'll convert -15/7 to an equivalent fraction with a denominator of 14:

-15/7 * (2/2) = -30/14

Now the expression becomes:

(-30/14 - 75/14) + 19.78

Now, you can add the fractions:

(-30/14 - 75/14) = -105/14

So, the expression becomes:

(-105/14) + 19.78

To add a fraction and a decimal, you can convert the fraction to a decimal:

-105/14 is approximately -7.5 in decimal form.

Now, the expression is:

-7.5 + 19.78

Now, simply add the decimal numbers:

-7.5 + 19.78 = 12.28

So, the final result is approximately 12.28.