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)
305/x = 61/86 // - 61/86
305/x-(61/86) = 0
305/x-61/86 = 0
305*x^-1 = 61/86 // : 305
x^-1 = 1/430
-1 < 0
1/(x^1) = 1/430 // * x^1
1 = 1/430*x^1 // : 1/430
430 = x^1
x = 430
x = 430
| 7x+6=2x+15 | | 7x+6=2x+5 | | 2y^2+12=-11y | | (6x-12)+(-8x+2)= | | y-1/4=2/7 | | 6/7x-3/2x=6 | | 3x^3+x+2015=0 | | 100[0.05(n+4)]= | | 0.75x+1.25(900-x)=950 | | 2b-4=-9 | | 0=x^3+25x | | 52=8c+7 | | 0.85x+1.10(20-x)=1(20) | | 53x+23x=8 | | 5x+23x=8 | | 0.01p+0.25(p+3)+0.1(p-2)+0.05=5.77 | | N-6=m | | 64+(8x-4)=180 | | 61+(7x+14)=180 | | 0.66x+6=0.33x-13 | | z+110=180 | | 15x+5=110 | | 71z=180 | | Q=200-4p | | 93+z=180 | | 93+(14x-39)=180 | | 250=-w+63 | | 93z=180 | | m^2-4m-m=0 | | 62=-y+167 | | 2p-5=10 | | 2y-5=10 |