If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( c )
c = 0
c = 0
c = 0
c in (-oo:0) U (0:+oo)
-9/c = 9 // - 9
-9/c-9 = 0
-9*c^-1 = 9 // : -9
c^-1 = -1
-1 < 0
1/(c^1) = -1 // * c^1
1 = -1*c^1 // : -1
-1 = c^1
c = -1
c = -1
| 1.5=-3.1x-0.62 | | x+41+130+x+31=180 | | q-2=1 | | -5x+120=6x-1 | | 10x-4(x-5)=6x+4 | | -13x-2=-93 | | |2z-3|=4z-1 | | 6(7x-7)=420 | | 6k-4k-8= | | 2+n/4=13 | | 7.9+x=7 | | 1/4g-3=-5 | | (x+8)/16=(10)/16+(4x-24)/16 | | -144=12k | | 5x+8y=600 | | 5=s+14 | | ac+2bc-3ad-6bd=0 | | 5(x-2)+3=7x-9 | | -1/1.6 | | 1/3(3y+6)-7=-1/3(6y-12) | | f-22=-3 | | -1/1.66 | | (7y+5)-(4+6y)=6 | | 4x+.5(2x+14)=37 | | 14+(-3x)=2 | | b/5.1=9 | | 6x+10=-3x+64 | | 113=7x+3x+3 | | 0.667x-5=0.5x-3 | | 0+1/6=-1 | | p-1=5 | | 1.9q-3.5-3.1q=-2.2q-5.4 |