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)
6/10 = 8/x // - 8/x
6/10-(8/x) = 0
6/10-8*x^-1 = 0
-8*x^-1 = -3/5 // : -8
x^-1 = 3/40
-1 < 0
1/(x^1) = 3/40 // * x^1
1 = 3/40*x^1 // : 3/40
40/3 = x^1
x = 40/3
x = 40/3
| 3x+(x+6)=90 | | 5x^4=5 | | U-8=4 | | -8x-4(6-5x)=49-(5-3x) | | 0.4=60 | | 4y-15=90 | | 3b*3-b-3=81 | | 2x-9=x+5-11 | | 90/100*x=148 | | 6/8=10/x | | 0=4p+4 | | x+(x+18)+(x-13)=180 | | V^5/4=243 | | -55+-18=53+7x | | 9x^2-7x-11=24 | | 12-(5+x)=0 | | 0=2p-7 | | 3+4x=-7-1x | | 7x-40=x+2 | | 5x+13-3x=8+4x-7 | | 12z+1+6z-1=90 | | 13x+23=2 | | x^2-3x+168=0 | | -3/4×12 | | f(x)=x^3-2x^2-25x+50 | | 1.1=2.7c+.22p | | 1/4=-4/1x-10 | | 3x-8/2=849.5 | | 0=x^3-2x^2-25x+50 | | y=34/5 | | F/25=3/8 | | -11(5)+3x(-2)= |