Question

1. -12 * (-8,6) - 9,4 2. 6,8 - 11 * (-6,1) 3. 6,4 - 7 * (-3,3)

Answer 1

Ответ:

Пошаговое объяснение:

1. -12 * (-8,6) - 9,4  = 103,2 - 9,4 = 93,8

2. 6,8 - 11 * (-6,1)  = 6,8 - (-67,1) = 6,8 + 67,1 = 73,9

3. 6,4 - 7 * (-3,3) = 6,4 - (-23,1)= 6,4 + 23,1 = 29,5

Answer 2

1. 93,8

2. 73.9

3. 29.5

Answer 3

To evaluate the expressions, you need to follow the order of operations (PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication/Division, Addition/Subtraction). Let's solve each expression step-by-step:

1. -12 * (-8.6) - 9.4 First, perform the multiplication: -12 * (-8.6) = 103.2

   Now, subtract 9.4 from the result: 103.2 - 9.4 = 93.8

   The result is 93.8.

2. 6.8 - 11 * (-6.1) First, perform the multiplication: 11 * (-6.1) = -67.1

   Now, subtract -67.1 from 6.8: 6.8 - (-67.1) = 6.8 + 67.1 = 73.9

   The result is 73.9.

3. 6.4 - 7 * (-3.3) First, perform the multiplication: 7 * (-3.3) = -23.1

   Now, subtract -23.1 from 6.4: 6.4 - (-23.1) = 6.4 + 23.1 = 29.5

   The result is 29.5.

So, the evaluated expressions are as follows:

1. -12 * (-8.6) - 9.4 = 93.8
2. 6.8 - 11 * (-6.1) = 73.9
3. 6.4 - 7 * (-3.3) = 29.5