If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( k )
k = 0
k = 0
k = 0
k in (-oo:0) U (0:+oo)
10 = 60/k // - 60/k
10-(60/k) = 0
10-60*k^-1 = 0
-60*k^-1 = -10 // : -60
k^-1 = 1/6
-1 < 0
1/(k^1) = 1/6 // * k^1
1 = 1/6*k^1 // : 1/6
6 = k^1
k = 6
k = 6
| 5n-4n+4n=10 | | 2=20-3m | | 50+.2x=60+.15x | | -3(x-8)=2 | | -2f=-3-f | | 7(x+3)=3x | | y=3x(2x+9) | | 50+.2x=60.15x | | 9-2t=-3t+10 | | 13X+74=180 | | 17+5i=14+2i | | 10*x=3.5214 | | 54-p=21 | | 3x-4lnx-5=0 | | 5x+24=-66-4x | | 5(2b+5)=45 | | 15+15i=14+2i | | 5v+8=3v | | 4a+3a-5a+3a+4a=9 | | -9-2r=7-6r | | (9x^2-1)=0 | | x+24+4x-30-4x-36= | | 9x-4=x+8 | | 14+2i=14+2i | | x-(12/x-3)=2 | | -9+7s=8s | | 8(2x-1)-3=21 | | 11xln(x)=12 | | 18+6i=14+2i | | 3k=8+k | | 3(3a+4)=30 | | 3x^2-50x-200=0 |