Question

0,4x - 0,6x - 0,87 = 12,73

Answer 1

0,4x - 0,6x - 0,87 = 12,73

-0,2x - 0,87 = 12,73

-0,2x = 12,73 + 0,87

-0,2x = 13,6

x = -68

Answer 2

0,4x - 0,6x - 0,87 = 12,73

Привести подобные члены то есть от 0,4 -0,6= - 0,2

-0,2x - 0,87= 12,73

Перенести постоянную правую сменив её знак

-0,2x = 12,73 + 0,87

Сложить

-0,2x = 13,6

x= -68

Ответ:

$x = - 68$

Answer 3

To solve the equation 0.4x - 0.6x - 0.87 = 12.73, we can start by simplifying the left side of the equation:

0.4x - 0.6x - 0.87 = 12.73

Combine like terms:

(-0.2x) - 0.87 = 12.73

Now, let's isolate the variable x by moving the constant term (-0.87) to the right side of the equation by adding 0.87 to both sides:

(-0.2x) - 0.87 + 0.87 = 12.73 + 0.87

Simplifying:

-0.2x = 13.60

Next, divide both sides of the equation by -0.2 to solve for x:

(-0.2x) / -0.2 = 13.60 / -0.2

Simplifying:

x = -68

Therefore, the solution to the equation 0.4x - 0.6x - 0.87 = 12.73 is x = -68.