Question

27*(-0,8)-10/21*(-3 1/2)​

Answer 1

Ответ:

=65498.4

Пошаговое объяснение:

Answer 2

Пошаговое объяснение:

27•(-0,8)= -21,6

2.незнаю

Answer 3

To calculate the expression, let's break it down step by step:

First, let's simplify the expression -3 1/2. This can be written as -3 - 1/2, which is equal to -3.5.

Now, we can rewrite the expression as follows: 27 * (-0.8) - 10/21 * (-3.5)

Next, let's calculate the individual parts:

27 * (-0.8) = -21.6

Now let's simplify the second part: 10/21 * (-3.5) = (-10 * 3.5) / 21 = -35 / 21 = -5/3

Finally, we can substitute these values back into the original expression:

-21.6 - (-5/3)

To subtract a fraction, we need a common denominator. The common denominator for 1 and 3 is 3. So, we rewrite -5/3 as -5/3 * 1/1:

-21.6 - (-5/3 * 1/1) = -21.6 - (-5/3) = -21.6 + 5/3

To add fractions, we need a common denominator. The common denominator for 3 and 1 is 3. So, we rewrite 5/3 as 5/3 * 3/3:

-21.6 + 5/3 * 3/3 = -21.6 + 15/9

Now, let's find a common denominator to add the fractions: -21.6 + 15/9 = -21.6 + (15 * 2) / (9 * 2) = -21.6 + 30/18

Now that we have a common denominator, we can add the fractions: -21.6 + 30/18 = (-21.6 * 18) / 18 + 30/18 = (-388.8 + 30) / 18 = -358.8 / 18

We can simplify this fraction by dividing the numerator and denominator by their greatest common divisor, which is 2: -358.8 / 18 = (-179.4 * 2) / (9 * 2) = -358.8 / 9

The simplified form of the expression is -358.8 / 9.