Question

-3,8a-2(a-b)+1,8a,если а=-3,b=2,3

Answer 1

Ответ: смотри фото

Объяснение:

Answer 2

To evaluate the expression -3,8a-2(a-b)+1,8a with a = -3 and b = 2.3, we substitute these values into the expression and perform the calculations.

Let's substitute the values of a and b into the expression:

-3.8(-3) - 2(-3 - 2.3) + 1.8(-3)

First, let's simplify the expression inside the parentheses:

-3.8(-3) = 11.4 -2(-3 - 2.3) = -2(-5.3) = 10.6 1.8(-3) = -5.4

Now, substitute the simplified values back into the expression:

11.4 + 10.6 - 5.4

Combine like terms:

11.4 + 10.6 - 5.4 = 21.6 - 5.4 = 16.2

Therefore, when a = -3 and b = 2.3, the expression -3,8a-2(a-b)+1,8a evaluates to 16.2.