i can't figure it out !!

5x - 8 = x + 4

To solve for the unknown variable, you need to isolate it to one side of the equation. In this case, the unknown variable is x, so we first subtract x from both sides of the equation then add 8 to both sides of the equation combining like terms as you go:

5x - 8 **- x** = x + 4 **- x**

**5x - x** - 8 = **x - x** + 4

4x - 8 = 4

4x - 8 **+ 8** = 4 **+ 8**

**4x = 12**

To solve for x, divide both sides of the equation by the variables coefficient, which is 4 in this case:

4x = 12

4x**/4** = 12**/4**

**x = 3**