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)
7.5/x = 250 // - 250
7.5/x-250 = 0
7.5*x^-1 = 250 // : 7.5
x^-1 = 33.33333333
-1 < 0
1/(x^1) = 33.33333333 // * x^1
1 = 33.33333333*x^1 // : 33.33333333
0.03 = x^1
x = 0.03
x = 0.03
| 11x-5-6x=6x-3 | | -2(3s-5)-10=-2(6s+0)-2 | | 24x^2+20xy-12y=0 | | 3/4(4x-2y) | | 6-7x-4=-68+5x-14 | | 6y-4y-9y=0 | | 5X+15Y=120 | | 12-6x=-8x+12 | | 30-3Y=20-1.3Y | | -5x-10=2x+25 | | 36=6f+4(2f+2) | | 10-0.3X=15+0.75X | | 1x+2y+3z=91 | | X+8x+3-9x-3= | | 8Y=120-6X | | X-x=456 | | 35x^2y-15xy^2-25xy=0 | | 15Y=150-5X | | 9x+10*10=10*10*10 | | 6x+1=9(3x+7)-(x+5) | | X^2+4x=81 | | (9x+4)-(5x+3)=25 | | 3x(xy-2)dx+(x^3+2y)dy=0 | | 8+47.6=80 | | x^4-4x^3-20x^2-8x+4=0 | | 2h+16=40 | | logx=29.68 | | 39.99+0.45=62.49 | | 348+y=77 | | 9x+15(8+2x)= | | 8b+2= | | 38.76+6=227.56 |