If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
15*x = 0
5*x = 0
15*x = 0
15*x = 0
15*x = 0 // : 15
x = 0
5*x = 0
5*x = 0
5*x = 0 // : 5
x = 0
x in (-oo:0) U (0:+oo)
-1/(5*x)-(7/(15*x)) = 5/15 // - 5/15
-1/(5*x)-(7/(15*x))-(5/15) = 0
(-7/15)*x^-1-1/(5*x)-1/3 = 0
-2/3*x^-1 = 1/3 // : -2/3
x^-1 = -1/2
-1 < 0
1/(x^1) = -1/2 // * x^1
1 = -1/2*x^1 // : -1/2
-2 = x^1
x = -2
x = -2
| (-0.25)x=3/5 | | (-(7/3)w)-4=((5/4)w)-(7/4) | | -0.42-(-2.3)= | | (-(5)/(x+2))=(-(3)/(4x+8))+2 | | 10-11x-6-3x=6 | | ((y-1)/2)+((y+1)/3)=((2y+5)/6) | | 5.00x=.28 | | ((x/3)-1)/x-3=0 | | x+8=8x-13 | | 5=(4-b)+2 | | 12+6(z-2)=5z+4 | | ((x-9)/6)-(5/8)=(6/8) | | ((x-7)/3)+((2x-1)/4)=((x+3.2)/7) | | 2/7y-5/6+5/7y=11/6 | | 0.84x(-0.5)-(-2.3)= | | ((x-5)/2)-((2x-1)/3)=6 | | -7(k-9)=-21 | | D+d/4=20 | | ((x-5)/2)+((x+3)/7)=1 | | ((X-4)/3)+(4/3)=-(x/7) | | ((x-3)/3)+((x+3)/6)=4 | | r/-5-3=14 | | ((X-2)/3)-((2x-1)/4)=((3x-2)/2)-(1/2) | | ((x-2)/(3))+((x+5)/(2))=(1/3) | | ((x-12)/(3-x))=((x+16)/(x+1)) | | 5X-3X+2=0 | | 7x+4=2+39 | | ((x-1)/3)-((x-1)/2)=6 | | ((x-1)/2x)+((x+3)/4x)=5 | | 3.2x-9.62=3.5 | | ((x-1)/(x+2))-(1/x)=0 | | 2=p+11 |