Question

0,2(5х-3)-(х+4),якщо х=-2​

Answer 1

Ответ:-4,6

Объяснение:

Answer 2

To evaluate the expression 0.2(5x - 3) - (x + 4) when x = -2, we substitute -2 for x in the given expression and perform the calculations.

0.2(5(-2) - 3) - (-2 + 4)

First, we simplify the expression within the parentheses:

0.2(-10 - 3) - (-2 + 4)

Now, we simplify the expression within the parentheses again:

0.2(-13) - (-2 + 4)

Next, we perform the multiplication:

-2.6 - (-2 + 4)

We simplify the expression within the parentheses:

-2.6 - 2 + 4

Now, we perform the addition and subtraction:

-2.6 - 2 + 4 = -4.6 + 4

Finally, we perform the remaining addition:

-4.6 + 4 = -0.6

Therefore, when x = -2, the expression 0.2(5x - 3) - (x + 4) evaluates to -0.6.