solve for x
5 + x 10
----- = ----
x 8
I am going to take a guess that you meant
(5 + x)/x = 10/8
In that case ....
10x = 40 + 8x
2x = 40
x = 20
5 + x 10
----- = ----
x 8
(5 + x)/x = 10/8
In that case ....
10x = 40 + 8x
2x = 40
x = 20