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)
27/x = 0.6429 // - 0.6429
27/x-0.6429 = 0
27*x^-1 = 0.6429 // : 27
x^-1 = 0.02381111
-1 < 0
1/(x^1) = 0.02381111 // * x^1
1 = 0.02381111*x^1 // : 0.02381111
41.99720215 = x^1
x = 41.99720215
x = 41.99720215
| -24=2x | | x^(2/3)-2x^(1/3)-24=0 | | 40.06+0.50m=90 | | -31=2x+7 | | 49/56+4/56 | | 4x+6=3-(5-7) | | 8x+2=3-(4-2x) | | 3(x-3)+2=-19 | | 4(x-1)-2=-22 | | 7/8+1/14 | | -7/3+9 | | 6(y-3)=5y | | 14+x=0.96 | | 1.5x-.5=3.2 | | -15/4+7 | | 7x+3=6-(6x-6) | | 0.13x+0.05(50000-x)=5000 | | 13+x=0.96 | | 5(3X+4)=23 | | 12Z+4=52 | | (2a+11)/(a+9) | | 27*7+7h/8+6+6h | | 8-2(6-4X)=0 | | 29x-7y=3 | | 5-6(8X+7)=2 | | -5w-25=-2(w+5) | | 7/2(-6X-7)=-1 | | 3x-6+8= | | 1/3x-3/4=5/6 | | -8(w-2)=3w+5 | | Y=4/7*-2+4 | | -9v+13=-5(v-1) |