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)
15/90.5 = 25/x // - 25/x
15/90.5-(25/x) = 0
15/90.5-25*x^-1 = 0
-25*x^-1 = -0.16574586 // : -25
x^-1 = 0.00662983
-1 < 0
1/(x^1) = 0.00662983 // * x^1
1 = 0.00662983*x^1 // : 0.00662983
150.83343012 = x^1
x = 150.83343012
x = 150.83343012
| 8(w-8)=3x-14 | | 6x^2-111x-57=0 | | a-8=6+5a | | 9p+6=9+8p | | 3x/8-5x/4=13 | | 4(m+9)=-29(m-5)+2 | | 5x+18=2(x+6) | | (-8x^2+2-8x^3)-(7-4x^2)= | | 30/27=90/x | | (y^3*x^4)dx=x^4*dy-5y^3*dx | | 3/j=50.9/16 | | 5+a/9=-1 | | 3(x-6)-6x=-27 | | a-8=6+51/3 | | 3x^3-34x^2+56x=0 | | 10x^2+90x+75=0 | | 6/40*10/12 | | 4z^2+24z=-160 | | 4x^3-70x^2+34x=0 | | 32=4(u+3)-8u | | 9/2+2 | | x^3+14x^2+13x=0 | | 4u-1=5u | | 2(u-8)=4u-12 | | 3x/4-7x/2=17 | | 5/6=7/12x+3/10+1/5x | | -2x^3+14x^2-24x=0 | | 3(y-3)-5y=11 | | n-9/4=-1 | | m+3m=-2 | | -7(1+5n)=2n-7 | | -5.4=1y+3.9 |