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)
X+11/x+7 = 0
11*x^-1 = -(X+7) // : 11
x^-1 = (-(X+7))/11
-1 < 0
1/(x^1) = (-(X+7))/11 // * x^1
1 = x^1*((-(X+7))/11) // : (-(X+7))/11
-11*(X+7)^-1 = x^1
x = -11*(X+7)^-1
x = -11*(X+7)^-1
| (5,19/5) | | 3x^4+12/x^2-15 | | Y^4-5y^2-6=0 | | 5m-2=4m+1 | | p=m(1-dt)form | | 6(u^9)(x^3)*2u*3x^3= | | 5(4x+4)=160 | | 2x+142=9x-12 | | z^3=4i | | 2(7t+1)-4=t-(t+1) | | z=3i | | 147-5x=22x+18 | | 2x(4x+7)=-3 | | 7+14*3+2=105 | | 7(7x-7)=98 | | (3x+12)/10=(2x+22)/2 | | x*6+14=114 | | 4(7x-7)=196 | | x=1+0.001*(-6) | | 8x+6y-23=0 | | 0.994=1+0.001*-x | | 179-5x=22x+23 | | 80x-4x=23x+17 | | 4/15-7/10 | | 7(5x-8)=189 | | 1+2y=9 | | 3(5x-9)=63 | | 5(3x+9)=120 | | 5x-5=12x-6x | | (2x+22)/2 | | (3x+12)/2 | | -9(2x+3)=15+5x |