If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3/x = 7/12 // - 7/12
3/x-(7/12) = 0
3/x-7/12 = 0
3*x^-1 = 7/12 // : 3
x^-1 = 7/36
-1 < 0
1/(x^1) = 7/36 // * x^1
1 = 7/36*x^1 // : 7/36
36/7 = x^1
x = 36/7
x = 36/7
| -3x+2=-15/4x+3 | | 3(-3+x)=18-6x | | 2b+10=30 | | 2h++10=-12 | | -3x-2=-15/4x+3 | | -3x-2=-15/4x+3 | | n-23=-40 | | 3-7x=4x | | x+5/4=-4 | | 5q-2=789 | | 6n+5(-7n+6)=30+2n | | (6x-1)+7x+90=180 | | 5.5x-1.5=15 | | 12b-[9-7(5b-6)]=0 | | 24-3c= | | 6x+7x+11=26 | | 4m+m/3=-20 | | n-35=1-5(8n-1) | | (3y+1)+(2y+2)+132=180 | | x^3+5x-9=0 | | -27+x=x+28 | | 2+5=3(2+4) | | (4a)+7= | | 4/5y=-16 | | 6x^3-x^2-6x=0 | | 8-6x+2+7-3=6 | | -19-10x=17x+15 | | -4.3-0.1m=-6.1 | | 8x-9y=2 | | 3(x-4)+5=-2(3x-4)+7 | | 34+6a=-8(-6a+1) | | 7x-9y=2 |