Ineed understanding how to find the answer for 5+2x=8x-4

Try to get all your like terms to the same side. for example get all your x values to the left side and all your number values to the right side.

5 + 2x = 8x - 4
2x - 8x = - 4 - 5
      -6x = -9
          x = -9/-6
          x = 1.5  or 1 1/2

hope this helps and have a great day! :)

10feet apart then both