If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
6000-x = 0
6000-x = 0
6000-x = 0
6000-x = 0 // - 6000
-x = -6000 // * -1
x = 6000
x in (-oo:6000) U (6000:+oo)
(3300-x)/(6000-x) = 0
3300-x = 0 // - 3300
-x = -3300 // * -1
x = 3300
x = 3300
| 4y+3-5y-7= | | lnx=20 | | 6×10^-4/30×10^2 | | y - 42 = 103 | | (2x-14)=(37-x) | | 6-6/(x-7)^2 | | 2a+5y-x= | | g-2/3=1/3 | | ln(x)=20 | | (3300-x)=440-.44x | | w/5=-10 | | 24A-222=-4(1-6A) | | (3300-x)=44-0-.44x | | 8x+5-7y+2x= | | -2x^3+14x^2-12x= | | 72+7r=r | | 2x+4=5(-4-2x) | | x+-8=17 | | 4x^4-15x^2+4=0 | | 53=1/2*x*x | | (600-x)=480-.48x | | 8z-16=96 | | d/5=-12 | | 2a-3-5y-7= | | X+(-8)=-17 | | 6-6/(x-4)^2 | | 7b-5+2b-3= | | 3x+12-x-40=22 | | 2(9)x+7(2)=-5 | | (81x+69y)-(20x+26y)= | | 0.5(6x+5)=0.75(8x-4) | | 9xy+3yz-8xz-9xy= |