Question

2а-3(a-4), если а=6,8;

Answer 1

Ответ:

5.2

Объяснение:

2а-3а+12

-а+12

Подставляем:

-6,8+12=5,2

Answer 2

Ответ:

5,2

Объяснение:

=2а-3а+12=12-а если а=6,8 ,то 12-6,8=5,2

Answer 3

To find the value of the expression 2а-3(a-4) when а=6.8, you simply need to substitute the value of а into the expression and then perform the arithmetic operations. Let's do that step-by-step:

1. Replace а with 6.8 in the expression: 2 * 6.8 - 3 * (6.8 - 4)

2. Perform the operations inside the parentheses first: 2 * 6.8 - 3 * 2.8

3. Now, perform the remaining multiplication and subtraction: 13.6 - 8.4

4. Finally, subtract the two numbers: 5.2

So, when а = 6.8, the value of the expression 2а-3(a-4) is 5.2.