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)
200/X = 3 // - 3
200/X-3 = 0
200*X^-1 = 3 // : 200
X^-1 = 3/200
-1 < 0
1/(X^1) = 3/200 // * X^1
1 = 3/200*X^1 // : 3/200
200/3 = X^1
X = 200/3
X = 200/3
| 13-18=-5x | | 5x-10+2x=32 | | k/25=85 | | 6+7x-2x=1 | | X/-3-2=9 | | x/9=16 | | x/9+16 | | 7-2x+5x=31 | | -X/4=25 | | 13x=-16+42 | | 8=-5x+7x+6 | | 2x-2=-5x+26 | | 68=r/4 | | 10x+22=3x+183 | | -20x-5x=-4 | | 49=7(3t-2) | | (8b-12)+b+(2b+5)=180 | | -4+9z=-16z-16 | | 2/x-12/8x-5 | | 4-x-3x=4 | | 3-x+2x=0 | | -13=4x+6x+7 | | -13=4x+6+7 | | 7x-8x+2=-9 | | 40=-2x-x+10 | | 18z+18=1-z | | 8=3t | | x+4-5x=-12 | | 1+6x+7x=105 | | (k-6)(k-1)=-k-3 | | x+37=23 | | 39x-50=39x+60 |