If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
5*x-15 = 0
2*x-6 = 0
5*x-15 = 0
5*x-15 = 0
5*x-15 = 0 // + 15
5*x = 15 // : 5
x = 15/5
x = 3
2*x-6 = 0
2*x-6 = 0
2*x-6 = 0 // + 6
2*x = 6 // : 2
x = 6/2
x = 3
x in (-oo:3) U (3:+oo)
(3*x-5)/(2*x-6)-((4*x-2)/(5*x-15)) = 0
(3*x-5)/(2*x-6)+(-1*(4*x-2))/(5*x-15) = 0
((3*x-5)*(5*x-15))/((2*x-6)*(5*x-15))+(-1*(4*x-2)*(2*x-6))/((2*x-6)*(5*x-15)) = 0
(3*x-5)*(5*x-15)-1*(4*x-2)*(2*x-6) = 0
7*x^2-42*x+63 = 0
7*x^2-42*x+63 = 0
7*(x^2-6*x+9) = 0
x^2-6*x+9 = 0
DELTA = (-6)^2-(1*4*9)
DELTA = 0
x = 6/(1*2)
x = 3 or x = 3
7*(x-3)^2 = 0
(7*(x-3)^2)/((2*x-6)*(5*x-15)) = 0
(7*(x-3)^2)/((2*x-6)*(5*x-15)) = 0 // * (2*x-6)*(5*x-15)
7*(x-3)^2 = 0
x-3 = 0 // + 3
x = 3
x in { 3}
x belongs to the empty set
| 9a^8b^6c^0/12a^3b^6 | | 2x+4y=196 | | (x^-144)/(x^2+12) | | 2x^2+32x+28=0 | | x=2d+1 | | 10-7x-7-14x=6 | | 2(5x+8)-4(x+9)=-26 | | 5(3x-6)-6= | | s-5-6= | | 2(x+4)=-3(x-9) | | 6x+8=4x-20 | | 5-5-6= | | 2ln(x)+ln(x^2)=3 | | 2/x+5/6 | | 19-47=4(x-3)-4 | | (X-4)(x-4)=36 | | 16t-7+4t=12t-1 | | y^2-4x-6y+13=0 | | ln(4x)=4.7 | | xy(6x-y)(x-3y)(x-6y)= | | t/4+3=t/8-1 | | -4.5= | | -6(x+2)-14=18+4 | | 16(x-8)=-7-9 | | 16p^2-400=0 | | (x+3)+3(x-1)=20whatisx | | 5b-5-7b-4= | | 27x=-9 | | -9/-27 | | 4(x+2)-1/2x=22 | | 5x^2+2-12=42-37x | | 2(2z-1)-21= |