If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r in (-oo:+oo)
30/20 = r/100 // - r/100
30/20-(r/100) = 0
3/2-1/100*r = 0 // - 3/2
-1/100*r = -3/2 // : -1/100
r = -3/2/(-1/100)
r = 150
r = 150
| 9p^2-6=-8p | | 18/12*41/2 | | 283=68-x | | 2(y-7)=8y+4 | | -2(2m-2)=20 | | -7+d=34 | | 3t-18=4[-3-3/4t] | | 20/30=r/100 | | M^2+12m=2 | | 12x-27=x^2-4x-12 | | (-15-√-18)/3 | | (x/5)-(3x/25)=2 | | P^2-20=-6p | | Log(x)-2=0 | | 8-2x=5-5x | | 0.6+1.4=0.6(y-8) | | 2n^2-85=7n | | 75a^2b-27b^3= | | 4a^2+7a=24 | | 22x-3(5x+8)=2x+6 | | 8y+4=-12 | | r^2-2r+36=0 | | 8(2w-2)=(3w+2) | | (2y)/9-3=9 | | 17=p+7 | | 17g=24+18 | | 4(x+2)-9=x-1 | | 6x+14=-5x-18 | | 3/4r=1/3 | | 12*16/4 | | 15-z=30 | | 5(n+7)+2=-35-4n |