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)
5/1.5 = 2.5/x // - 2.5/x
5/1.5-(2.5/x) = 0
5/1.5-2.5*x^-1 = 0
-2.5*x^-1 = -3.33333333 // : -2.5
x^-1 = 1.33333333
-1 < 0
1/(x^1) = 1.33333333 // * x^1
1 = 1.33333333*x^1 // : 1.33333333
0.75 = x^1
x = 0.75
x = 0.75
| 5x-3=13x-12 | | 12(18)=2.5(y) | | x/x-4=x-3 | | tan(x)+x*sec^2(x)=0 | | 5x+2+3x+5+8x+8+4x+15=540 | | 4m^2x^2-24mx^2+36x^2-4(x^2+mx^2)(9)=0 | | -2/3*×=5/9 | | ((1-x^3)(dy/dx))=3(x^2)y | | ((1-x^3)(dy/dx))=3x^2y | | cos^2(x)=2-2sin(x) | | 11*199=11*15+5d | | 5+55x=44x+7 | | 5X+17=5x-4 | | W-5=5-w | | Q-37=8.8 | | -x/12=1/4 | | 8p+1=9 | | 7+92X=52X+31 | | 2(5x-24)=6x | | 21x^7-12x^5= | | 250=10(x-60)+50 | | 2(5x-16)=6x | | 9x+20=6x+101 | | X+4.5=8.5 | | 13x=5x+64 | | sin*2x=5 | | 7+49x=28x+317 | | -2x^2+11x+8=0 | | -16+4x=-32+18 | | 4d+d+4d+6-2d=0 | | 3(t+1)=t+13 | | 2=11+3 |