Question

3 - 5x = 0,3(2x + 1);​

Answer 1

Ответ:

$3 - 5x = 0.6x + 0.3 \\ 5x - 0.6x = 0.3 - 3 \\ 4.4x = - 2.7 \\ x = \frac{ - 2.7}{4.4}$

Answer 2

To solve the equation 3 - 5x = 0.3(2x + 1), you can follow these steps:

1. Distribute the 0.3 on the right side of the equation:

   3 - 5x = 0.3 * 2x + 0.3 * 1

   Now the equation looks like this:

   3 - 5x = 0.6x + 0.3

2. Move all the terms with "x" to one side of the equation and the constants to the other side. To do this, you can subtract 0.6x from both sides of the equation:

   3 - 0.6x - 5x = 0.3

   Simplify the left side:

   3 - 5.6x = 0.3

3. Next, subtract 3 from both sides to isolate the terms with "x" on the left side:

   3 - 5.6x - 3 = 0.3 - 3

   Simplify the equation:

   -5.6x = -2.7

4. To solve for "x," divide both sides by -5.6:

   (-5.6x) / (-5.6) = (-2.7) / (-5.6)

   x = 0.48214 (rounded to five decimal places)

So, the solution to the equation 3 - 5x = 0.3(2x + 1) is approximately x = 0.48214.