Question

1) -63×(7-11); 3) -2,2×(8-3); 5) (32-40)×3,5; 7) (6,5-8)×2,4; 9) (5,3-4,8)×(-6,2).

Answer 1

Ответ:

1) 252

3)-11

5)-28

7)-3,6

9)-3,1

Answer 2

Let's solve the expressions one by one:

1. -63 × (7 - 11)

First, we need to evaluate the expression inside the parentheses:

7 - 11 = -4

Now we substitute the value back into the original expression:

-63 × (-4)

Multiplying these values together:

-63 × (-4) = 252

So, the answer is 252.

3. -2.2 × (8 - 3)

Evaluating the expression inside the parentheses:

8 - 3 = 5

Now we substitute the value back into the original expression:

-2.2 × 5

Multiplying these values together:

-2.2 × 5 = -11

So, the answer is -11.

5. (32 - 40) × 3.5

Evaluating the expression inside the parentheses:

32 - 40 = -8

Now we substitute the value back into the original expression:

-8 × 3.5

Multiplying these values together:

-8 × 3.5 = -28

So, the answer is -28.

7. (6.5 - 8) × 2.4

Evaluating the expression inside the parentheses:

6.5 - 8 = -1.5

Now we substitute the value back into the original expression:

-1.5 × 2.4

Multiplying these values together:

-1.5 × 2.4 = -3.6

So, the answer is -3.6.

9. (5.3 - 4.8) × (-6.2)

Evaluating the expression inside the parentheses:

5.3 - 4.8 = 0.5

Now we substitute the value back into the original expression:

0.5 × (-6.2)

Multiplying these values together:

0.5 × (-6.2) = -3.1

So, the answer is -3.1.

To summarize:

1. -63 × (7 - 11) = 252
2. -2.2 × (8 - 3) = -11
3. (32 - 40) × 3.5 = -28
4. (6.5 - 8) × 2.4 = -3.6
5. (5.3 - 4.8) × (-6.2) = -3.1