Question

1,2-3,6 (х-3)=5 (8-0,4)​

Answer 1

1,2-3,6х+10,8=5•7,6
12-3,6=38
-3,6х=38-12
-3,6х=26

Разделим обе стороны на -3,6
Получаем
х=-13•5/9
х=-65/9
х=-7,2

Answer 2

It appears you've written a mathematical expression. Let's simplify it step by step:

1. First, let's simplify the expressions inside the parentheses:

   • (8 - 0.4) = 7.6
   • (x - 3) remains as is.

2. Now, the expression becomes:

   1,2 - 3,6(x - 3) = 5 * 7.6

3. Next, distribute the 5 on the right side of the equation:

   1.2 - 3.6(x - 3) = 38

4. Now, distribute the -3.6 on the left side of the equation:

   1.2 - 3.6x + 10.8 = 38

5. Combine like terms on the left side of the equation:

   1.2 + 10.8 - 3.6x = 38

6. Add 1.2 and 10.8 to get 12:

   12 - 3.6x = 38

7. Now, we want to isolate the variable "x." To do that, we'll first get rid of the constant 12 on the left side. We can do this by subtracting 12 from both sides of the equation:

   12 - 12 - 3.6x = 38 - 12

   -3.6x = 26

8. Finally, divide both sides by -3.6 to solve for x:

   -3.6x / -3.6 = 26 / -3.6

   x ≈ -7.22 (rounded to two decimal places)

So, the solution to the equation is approximately x ≈ -7.22.