If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( a )
a = 0
a = 0
a = 0
a in (-oo:0) U (0:+oo)
1/6-(1/a)-(3/4) = 0
1/6-a^-1-3/4 = 0
-1*a^-1 = 7/12 // : -1
a^-1 = -7/12
-1 < 0
1/(a^1) = -7/12 // * a^1
1 = -7/12*a^1 // : -7/12
-12/7 = a^1
a = -12/7
a = -12/7
| 700/r=150/(r-110) | | 7/4k+1/k=-2 | | 0=(-200/x^2)+8 | | 0=(-200-x^2)+8 | | 20x-9= | | 4x-8x/2 | | X(x-6)=4(x+24) | | 175*24= | | -16t+8t+360=0 | | -16t+8t+360= | | 1/x+1/(x+4)=14/45 | | (x-5)/x+(1/6)=2/x | | 48x=0.16 | | (x+4)/x+(1/7)=5/x | | (x+1)/x+(2/3)=(5/x) | | 18/r=78/(r+10) | | 20/(6-c)=28/(6+c) | | 15/16x=1 | | 7x-14=7x-14 | | y-8=-7/9x | | 0.198x^2+0.054x-0.461=0 | | -16x+2x^4=0 | | 80*1/2+3= | | -6(6)=x | | 3(-6m+2)=6(1+6m) | | 24x-144=x^2 | | (x-5)(2x-7)= | | -6x+24=-90 | | .25(-1.25)=x | | (3x+7)(x-6)=0 | | x+1/5=-7/10 | | 7y-6=3y+2 |