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)
30/75 = x/650 // - x/650
30/75-(x/650) = 0
2/5-1/650*x = 0 // - 2/5
-1/650*x = -2/5 // : -1/650
x = -2/5/(-1/650)
x = 260
x = 260
| 29+2y-8=9y-9-24 | | x+y+z=-3 | | 8y-16y=40 | | -4r=3r+23 | | -2/5x+12=-42 | | -17-1+29-37=-6-4m-6+5m | | X+3=4/x | | 3-n=5 | | 2ln-3ln=4 | | n+4=16+4+9+10+3 | | 2+3x=-2x | | 3n=8+4 | | 2x-6/-2=x-5 | | x+2y=63x-4y=28 | | 3x+6x=-8 | | 4-3b=3b-5 | | 6x+12.3-12.2=-1.5 | | 3m-5+8=-4m | | x^8-625x^4=0 | | 3x=1x-24 | | 14-y=12y | | T^2+18t+81=0 | | 3x-24=1x-24 | | f(x)=-6x^2+4x+9 | | 2(3x-1)=5x+33 | | n^2-n=110 | | 4=w/-26 | | -22+16=-8x+10x | | 7(y-6)=3(-3y) | | 9=k/-15 | | 13/15+12/18 | | 12=z/12 |