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)
-434/x = -86.8 // + 86.8
86.8-434/x = 0
-434*x^-1 = -86.8 // : -434
x^-1 = 0.2
-1 < 0
1/(x^1) = 0.2 // * x^1
1 = 0.2*x^1 // : 0.2
5 = x^1
x = 5
x = 5
| -1/5x-8-9 | | 36=-5x-9 | | -2(3y-5)= | | 1-13=z/-5 | | .5x=14+2x | | 8x-7=9x+5 | | log(x)=0.63 | | 9(-4x-3)=-3x | | 3z^2+12z+2=0 | | 3x-13=2x+45 | | 3x-13+2x+45=180 | | 5x+15-4x=-2-13 | | 5x+15-14x=-2-13 | | 3-13+2x+45=90 | | 61y=30(2y+10) | | 64x^2+2=0 | | 4-4=17x+8x | | x=-7+-2y | | 2x+45+3x-13=180 | | X-12=(16x)^1/2 | | ln(x)+ln(5)=0 | | 21-44=3(x-3)-5 | | 8(x-8)-6(x-5)+3x= | | 21-44=33(x-3)-5 | | 3x^2=17x+64 | | 2(8y-6)=4y | | 8x-20=4x-8 | | 3(x-1)+2(x+1)= | | -9-4=8x+5-7x | | 1x+4x=40 | | -870/x=-435 | | -870-x=-435 |