If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( u )
u-6 = 0
u-6 = 0
u-6 = 0
u-6 = 0 // + 6
u = 6
u in (-oo:6) U (6:+oo)
4 = -5/(u-6) // + -5/(u-6)
4-(-5/(u-6)) = 0
5*(u-6)^-1+4 = 0
5/(u-6)+4 = 0
5/(u-6)+(4*(u-6))/(u-6) = 0
4*(u-6)+5 = 0
4*u-19 = 0
(4*u-19)/(u-6) = 0
(4*u-19)/(u-6) = 0 // * u-6
4*u-19 = 0
4*u-19 = 0 // + 19
4*u = 19 // : 4
u = 19/4
u = 19/4
| 10x=3.7 | | 13=3v+4 | | 6n+40=4n-10 | | 340=45d+25 | | 8n=62-14 | | -315-5(2b-189)=-1440 | | 18b-(8b-7)=2037 | | (5x)+(4x+15)+(6x)+(7x-10)+(5x-5)=540 | | 6X-3+2X=5X-4-2X | | q+1/q+4q+3 | | 2(3p+1)=-5(-1-4p)-5p | | -17+(-16)(-1/2) | | 1-f=-2 | | 18b-(8b-7)=2307 | | 150*12= | | a-22=-5 | | (180(12-2))/12 | | -4(-8t+2)=-10t-8 | | 150*x=180(x-2) | | -23+18+x=-5 | | 3x^2+14x+37=0 | | 2y+7=25 | | 8x+12=30 | | x+.04=36920 | | k-2(-9-5k)=-3 | | 5m+8=38 | | 3x-62+x+11=3x-9 | | 3(2x+3)+4=-9-4x | | 4x-51=3x-9 | | x^2+y^2+16x-12y+96=0 | | 7c-2(8c+1)=-1802 | | -1.8=t-4 |