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)
160 = (180*(x-2))/x // - (180*(x-2))/x
160-((180*(x-2))/x) = 0
160-180*x^-1*(x-2) = 0
160-180*x^-1*(x-2) = 0
360*x^-1-20 = 0
360*x^-1-20 = 0
360*x^-1 = 20 // : 360
x^-1 = 1/18
-1 < 0
1/(x^1) = 1/18 // * x^1
1 = 1/18*x^1 // : 1/18
18 = x^1
x = 18
x = 18
| -14=-4(9a-1) | | 18p=19.8 | | 6x-1/12=x/30 | | (x+5)*y=104 | | X+X-16=20 | | x-3-5=7-3x | | 135=180(x-2)/x | | 106+53+x+10+x+15=360 | | -2(-c-12)=2x-12 | | 5x+4+3x+7+x-2=180 | | 11811x=-3 | | 8.5x(9)=15 | | 2(8-3c)=4c-34 | | -26=8(-3p+1)+5(2-4p) | | 6a-95=a | | 80*l=160*4 | | f(-x)=4x^2+3x-3 | | -26=8(3p+1)+5(2-4p) | | 25d^2+40d+12=0 | | x(x-3)-5=7-3x | | -44=-8(2+7x)+4(8x-7) | | 6=-4w+2(w+8) | | 8+4x-28=2 | | 60-5a=a | | 6a+40=76 | | 124=4(8k+7) | | y=0.5x+14 | | 8=5r-7r | | 80+x+10+110+3x=360 | | 6-x=5x+2 | | 19=1+7x+2x | | sin*3*x=1 |