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)
2/x = -4 // + 4
2/x+4 = 0
2*x^-1 = -4 // : 2
x^-1 = -2
-1 < 0
1/(x^1) = -2 // * x^1
1 = -2*x^1 // : -2
-1/2 = x^1
x = -1/2
x = -1/2
| 3k+15=66 | | ((3x-1)/2)-((5x+4)/3)-((x+2)/8)=((2x-3)/5)-1/10 | | 36-y=-36 | | 7a+3n+3a= | | 4d+12=42 | | x+2+7=40 | | 42-(3c+4)=2(c+4)+c | | 2x+3(2x+15)=125 | | 10(-11-4p)-2p=2(-1-3p) | | 8x-5=1+6x | | 2+675n+80=2310 | | 2+675+80n=2310 | | -8y+5(y+2)=-11 | | 2x+6-7=5-4x | | 4x(x-3)=15 | | 67+5/2x=92 | | 4x+4.2x=5 | | X+3+7=40 | | -46=-6t-8 | | -2+9=16x-5-15x | | 2n+675+80=2310 | | 4x+4.2=5 | | p+8-2=10 | | 5(s-4)-s=4s-20 | | x-8.2=-5.2 | | 4(4)+8y=40 | | 3=6-8n-3 | | 8-c=30 | | 7-10(1-10a)=11a+8(9a-11) | | 2x-5(3)=17 | | s+37=14 | | r+2s-(-3r)-s= |