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+1/x = 4 // - 4
3/x+1/x-4 = 0
4*x^-1 = 4 // : 4
x^-1 = 1
-1 < 0
1/(x^1) = 1 // * x^1
1 = 1*x^1 // : 1
1 = x^1
x = 1
x = 1
| x+(3/x)=-4 | | 9x+22=5x+10+2(x+9) | | 3/8y=30/16 | | -3(8.3+3)=16 | | 5(x+16)-33x=7 | | x^4-9x^2+8= | | -15t^2-24t-9=0 | | 3/8y=114/16 | | ((5a+7)/(a+2))-((3a-4)/(a+2)) | | 2x^2-3x+3= | | x^2+2xy=27 | | (-1/5)(-1/5)(-1/5)(-1/5)(-1/5) | | 12=x-5 | | 4x^2-21-18=0 | | -2(2s-1)-2=-3(7s+3)-4 | | (3-2b)(3+2b)= | | x^4-21x-18= | | 3+11x=36 | | 7X+10-9X=14-16X+14X-4 | | 7x^2+5x/x^2+1-5x/x^2-6 | | v(v-2)=35 | | 10y+15=85 | | -8/3+-4= | | R+r=42 | | -8=(b-6)4 | | 4g+2g=24 | | (t+3)(t-12)=0 | | 2-lnx=0 | | 2x+13-4x=16-15x+13x-3 | | 12x^3+36x^2-480x=0 | | -30+x=x+19 | | -12=-4x-2x |