If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( w )
w = 0
w = 0
w = 0
w in (-oo:0) U (0:+oo)
40/w = 10/15 // - 10/15
40/w-(10/15) = 0
40/w-2/3 = 0
40*w^-1 = 2/3 // : 40
w^-1 = 1/60
-1 < 0
1/(w^1) = 1/60 // * w^1
1 = 1/60*w^1 // : 1/60
60 = w^1
w = 60
w = 60
| 5y^3+44y^2-9y=0 | | 6/7=c/56 | | x-8/5=x+1/-2 | | 6x+12=93-3xf | | 3/4a+1/2b-1/2a | | 2x^2-20x-5=0 | | 3-33/9 | | 3a^2-22a+24=0 | | 59-6x=30x+19 | | 3(x+4)-(x+2)=40 | | (4t)^2t^0/4t^-8v^-8 | | 0,84/x=24000 | | -5/3x-1/3x=-2 | | -30/(-10)=3 | | 2x=3a | | 2x+6=5x-3/4 | | -30/(-10) | | 30=m-3 | | 8+2/x^5 | | 0.29x+100+1.2x=51 | | 18x+216=18x+216 | | 12x+12/2x+2 | | (y/8)+19=30 | | 3-4n+2n=2n-15 | | 1/2=-3/2x+1+1 | | 7x^5=5+2x^5 | | 9/2+5/2y=2y*2 | | 5x+2(x-5)=1 | | 5/8a=1/4 | | 0.15-0.01(x+1)=-6.02(2-x) | | 4-(3-5x)=0 | | (3/4)q-7=8 |