Question

8(0,7 х-4)-2(0,2х-3)=-39

Answer 1

8(0,7х-4) - 2(0,2х-3) = -39
5,6х-32-0,4х+6 = - 39
5,2х = 32-39-6
5,2х = -13
х = -13/5,2
х = -2,5

Answer 2

To solve the equation 8(0.7x - 4) - 2(0.2x - 3) = -39, you can follow these steps:

1. Distribute the constants inside the parentheses: 5.6x - 32 - 0.4x + 6 = -39

2. Combine like terms on both sides of the equation: (5.6x - 0.4x) - 32 + 6 = -39

3. Combine the x terms: 5.2x - 32 + 6 = -39

4. Combine the constants: 5.2x - 26 = -39

5. Add 26 to both sides to isolate the variable term: 5.2x - 26 + 26 = -39 + 26

6. Simplify the equation: 5.2x = -13

7. Finally, divide both sides by 5.2 to solve for x: 5.2x / 5.2 = -13 / 5.2

   x = -2.5

So, the solution to the equation is x = -2.5.