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)
5.7/x-4.9 = 0
5.7*x^-1 = 4.9 // : 5.7
x^-1 = 0.85964912
-1 < 0
1/(x^1) = 0.85964912 // * x^1
1 = 0.85964912*x^1 // : 0.85964912
1.16326531 = x^1
x = 1.16326531
x = 1.16326531
| 2x+6ix=0 | | 5y-10=-5+2y | | .054x+4.939=.04x+4.932 | | 4x-20+2x-12=10 | | .6(x+20)+.4x=35 | | .32(12)+.08x=.16(36+x) | | 2x^2+14x-216=0 | | 8b^2-18b+9= | | 7.3=(-n/1.1) | | 11=y+3 | | Y=50+8(x) | | 12n^2=108 | | .6(1+.5x)=-6 | | 7(w-4)=-2w-10 | | -.666(x-12)+.5(x+2)=x+11 | | -3x+6=6(x-8) | | 0.5q+2q+10=-4q+4+1 | | 6x^2+x+100=0 | | 7(w+8)=9w+36 | | -3(3s-5)-15=-3(9s+2)-3 | | y=-x^2+80 | | -.11111(x-27)+.33333(x+3)=x-17 | | 5x^2+12x^2=2704 | | 49x^2-4=-21x | | (2/9)y=4 | | 20q^2-23qt+6t^2=0 | | 2lnx-ln(2x-9)=ln(5x)-ln(x-4) | | 27-12=3(x-2) | | 4-8u=2u+4 | | 33+4y-9=14y-11-3y | | 5x/2=-7 | | x+19+4x=-43-4x-46 |