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)
140 = (180*(x-2))/x // - (180*(x-2))/x
140-((180*(x-2))/x) = 0
140-180*x^-1*(x-2) = 0
140-180*x^-1*(x-2) = 0
360*x^-1-40 = 0
360*x^-1-40 = 0
360*x^-1 = 40 // : 360
x^-1 = 1/9
-1 < 0
1/(x^1) = 1/9 // * x^1
1 = 1/9*x^1 // : 1/9
9 = x^1
x = 9
x = 9
| 5a-16+2a-2=-4 | | 3x+4-5x=2x+16 | | h(x)=x(x-3)-4 | | 10x+3y=19 | | 14y+6= | | 7x-5=-3x+45 | | 8x+5y=-1 | | 450=175+30y | | (2x-6)=3 | | x^2+11z-12=0 | | 140=180*(x-2)/x | | 15=225/n | | 3w^2-8w=-4 | | -3/7+x=-9 | | -3(4b-10)=12(-24b+60) | | 2.1k-4=3.1k+4 | | 15=225n | | x/3+1.99=55.99 | | 64x^2+80+25=0 | | f(-x)=x^2+3x-8 | | -1/2x+5(x-3)=x-1 | | -7/d+14=0 | | 11/K=16 | | 16w=12w-8 | | 16=11/X | | 5x+6y=-2 | | -17/9=p/9 | | 13-3p=5*3+2p | | -15Y=13Y-28 | | -7-7=3p+23 | | .2(x+3)-4(2x-3)=3.4 | | m-9=11-2m |