Question

1) 7,3 - ( 5 4/3 - 6,7 ) 2) -5,4 + (-8,6 + 13,7 ) 3) - ( 23,1 + 2.4 ) +9,1

Answer 1

Ответ:

27

Пошаговое объяснение:

Лкящтштякг

Answer 2

Let's solve the given arithmetic expressions:

1. 7,3 - (5 4/3 - 6,7):

To solve this expression, we'll begin by simplifying the parentheses first.

5 4/3 can be written as a mixed number: 5 + 4/3. So, 5 4/3 - 6,7 becomes (5 + 4/3) - 6,7.

Now, let's solve the expression within the parentheses:

5 + 4/3 = (5 * 3 + 4) / 3 = (15 + 4) / 3 = 19 / 3.

Substituting this back into the original expression:

(19/3) - 6,7.

To subtract a decimal number from a fraction, we need to convert the fraction into a decimal. Dividing 19 by 3 gives us approximately 6.3333.

6.3333 - 6,7 = -0.3667.

Therefore, the result is approximately -0.3667.

2. -5,4 + (-8,6 + 13,7):

Here, we'll simplify the parentheses first:

-8,6 + 13,7.

Adding -8,6 and 13,7 gives us 5,1.

Now we substitute this back into the original expression:

-5,4 + 5,1 = -0,3.

Therefore, the result is -0,3.

3. • (23,1 + 2.4) + 9,1:

We'll begin by evaluating the expression within the parentheses:

23,1 + 2.4 = 25.5.

Now, substituting this back into the original expression:

• (25.5) + 9,1.

Negating 25.5 gives us -25.5.

-25.5 + 9,1 = -16.4.

Therefore, the result is -16.4.