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)
3.5/x = 5.25/18 // - 5.25/18
3.5/x-(5.25/18) = 0
3.5/x-0.29166667 = 0
3.5*x^-1 = 0.29166667 // : 3.5
x^-1 = 0.08333333
-1 < 0
1/(x^1) = 0.08333333 // * x^1
1 = 0.08333333*x^1 // : 0.08333333
12.00000048 = x^1
x = 12.00000048
x = 12.00000048
| 5t^2+6t-44=0 | | 2x-18=78 | | -6=x^2-5x | | x/p=x-2/7 | | 5(x+6)=4(x-6)+x | | h=8f | | 7-5y=10-(6x+7) | | -5/3=p/15 | | 20/x=4/2 | | 5x-8x+8=x-7+15 | | y^4-7y^2-18=0 | | 12(x+4)-6x=6(x+9) | | 2x^4+3x^2+7=0 | | 14=4(x-1)-(x-9) | | 4(3x-3)-2=4(x-4)+58 | | 4(3x-3)-2=4(x-4)+55 | | 16t^2-24t+4=0 | | -1n+5=9n | | 2x-(3x+9)=7x-17 | | -2-8+(-9)-5= | | 2x-7x+8=x-3+11 | | x^2+4+8=0 | | [2x-3]=4x-1 | | 31x+20=12x-37 | | =e^2x | | (8i)(4i)(-9i)=0 | | x-8/3=-2 | | 12.6x-2.3x=-206 | | -5x-13x=108 | | -4-y=-9 | | 8y+12x=-6 | | 2[x-(4x+13)+7]=2(x+6) |