If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
9/5 = x/3 // - x/3
9/5-(x/3) = 0
9/5-1/3*x = 0 // - 9/5
-1/3*x = -9/5 // : -1/3
x = -9/5/(-1/3)
x = 27/5
x = 27/5
| x(1-0.02x)=10 | | x(1-0.02x)=20 | | x(1-0.02x)=26 | | 13.14/12= | | 4/6=x/3 | | 12/13.14= | | 13.14/12 | | 40/0.04 |