Question

-2,8 - 3,6(x-3)=5(8-0,4x)

Answer 1

Ответ: х=-20

Пошаговое объяснение: удачи!

-2,8 - 3,6(x-3)=5(8-0,4x)

-2,8-3,6х+10,8=40-2х

-2,8+10,8-3,6х=40-2х

8-3,6х=40-2х

-3,6х+2х=-8+40

-1,6х=32

х=32:(-1,6)

х=-20

______________________ проверка:

-2,8 - 3,6(-20-3)=5(8-0,4*(-20))

          80=80

Answer 2

Let's solve the given equation step by step.

$-2.8 - 3.6(x - 3) = 5(8 - 0.4x)$

First, let's distribute the constants and simplify the equation:

$-2.8 - 3.6x + 10.8 = 40 - 2x$

Combine like terms:

$7 - 3.6x = 40 - 2x$

Now, let's isolate the $x$ terms on one side and the constants on the other side:

$-3.6x + 2x = 40 - 7$

$-1.6x = 33$

Finally, solve for $x$:

$x = \frac{33}{-1.6}$

$x \approx -20.625$