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)
abs(5*x)/x = 0
abs(5*x)/x = 0
x in (-oo:+oo)
abs(5*x)
5*x >= 0
5*x+0 >= 0 // - 0
5*x >= 0 // : 5
x >= 0/5
x >= 0
x in <0:+oo)
(5*x)/x = 0
x in (-oo:0)
(-(5*x))/x = 0
abs(5*x)/x = 0
/| (-(5*x))/x = 0 i x in (-oo:0)| (5*x)/x = 0 i x in <0:+oo)
x in (-oo:0)
(-(5*x))/x = 0
-5 = 0
x belongs to the empty set
x in <0:+oo)
(5*x)/x = 0
5 = 0
x belongs to the empty set
x belongs to the empty set
| 3(5+2x)=9 | | 2y-1=3y+2 | | d-6r=-r | | x/175=45/100 | | [8x+1]=23 | | 3+5x+7=2(4+1)+10x | | (3/4x^3y^2)^2 | | 5-x=8x-13 | | 7(3n+4)=7(6n+4)+9 | | 17k-9=3k-8k | | 0.04x+0.03(s+200)=27 | | [2n-5]=7 | | 14.50p=53 | | 2s-4=2s | | 5+3x-7=4x-2-x | | (1/5q)=9-(2/5q) | | 2x=p | | 4y-3+y+34=7y+40-5y | | 3x+15/6+x+23/4=15 | | [22-3n]=5 | | 5E^2+6E=6E^3 | | 180=x+5x+(x+5) | | 1/3(6-15w)=3/8(40w-8)+10 | | x/175=45% | | 2x+2=14x | | 3+2x=7x-17 | | 2x+3=p | | 4b^2-16b-128= | | x^3-3x^2+8x-24= | | 5(3-d)n=2d+1 | | 7*(5-2x)+12x=17+x | | 90p+500=5000 |