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)
8/7 = 4/x // - 4/x
8/7-(4/x) = 0
8/7-4*x^-1 = 0
-4*x^-1 = -8/7 // : -4
x^-1 = 2/7
-1 < 0
1/(x^1) = 2/7 // * x^1
1 = 2/7*x^1 // : 2/7
7/2 = x^1
x = 7/2
x = 7/2
| 4(p-3)= | | 7x+9-9=16-9 | | -9/8-1/2 | | -1/4-9/4 | | 1x+87=91-3x | | 2/n=5/2 | | -8x=-12 | | 3u^2+12=96 | | -19/8-18/5 | | m-9+21=13+6 | | 6-2x=3x+28 | | 3u^3+12=96 | | -7/6-3/4 | | m-9+21=-13+6 | | -1/8-5/2 | | 2x-8(7x+4)=-21x+14 | | 3x-20=6x-2 | | 13-3y=2y-7 | | 2/5-9/10=a/3 | | 27/7-6/7 | | 3(y-20)=3y-6 | | 2n(14)=180 | | 3x+5(x-4)= | | 2.3x+(-1.7x)= | | -x/1.7=1.2 | | x^2+4c+4=16 | | 5m+(4m+8)+3m+(6m+2)= | | 8=2/11x | | 4d+1=-4d^2 | | -7/9x=-14 | | 4p^2+2=16p | | 6d-4=4-d |