If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( q )
q = 0
q = 0
q = 0
q in (-oo:0) U (0:+oo)
12/q = 3/4 // - 3/4
12/q-(3/4) = 0
12/q-3/4 = 0
12*q^-1 = 3/4 // : 12
q^-1 = 1/16
-1 < 0
1/(q^1) = 1/16 // * q^1
1 = 1/16*q^1 // : 1/16
16 = q^1
q = 16
q = 16
| .240+8x=.35(40) | | 58y=19(3y+9) | | -57x-22=-47x+43-5 | | .7x-12=15-.4x | | 9j-8j=7 | | 3.95+19.6k=19.1k | | t^4-4t+2=0 | | 9x+2=15x-52 | | D=Pgj | | -7(2n+1)+1=106 | | 8x-20x^2=0 | | 3-3=5x+2x | | (2x+2)(3x+5)= | | 3.59-2.5s=10.79-0.7s | | 536/1000 | | 752=4(x+16) | | 3x+8y-5=19findy | | 7a^2+10a-3a-2a^2= | | 6(k-2)=12 | | 2k-7=4 | | 14.51-12.3m=-4.35+17.58-13.1m | | 4x^3-70x^2+300x-300=0 | | 5x+2+11x-30=180 | | 17j+16=19j | | 1/8(5x=4)=3/4 | | 19-46=3(x-2)-3 | | 4p-4=4p | | 16x^4-24x^2y^2+9y^4=0 | | -16x^2+60x-56=0 | | -7-10f=17-8f+12 | | 3[(15-9)]/4 | | X-6+3X=60+X |