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)
10/x = 20 // - 20
10/x-20 = 0
10*x^-1 = 20 // : 10
x^-1 = 2
-1 < 0
1/(x^1) = 2 // * x^1
1 = 2*x^1 // : 2
1/2 = x^1
x = 1/2
x = 1/2
| x^4-2=x^2 | | x=10-2x | | 1-x=9-4x | | 87-2x=34x+19 | | 8a+29=12a-48 | | x^2-15x+5=-8x-5 | | 5x-8/3 | | 4-9b=132-44b | | 5a+68=11a+14 | | -59-10b=10b+21 | | -287=7(1+6n) | | 28=-9v-8v+5v | | x=5-x | | 5b+10=-102-9b | | 8a+6=5a+18 | | 16+20=22x+8 | | 132-5b=3b+12 | | y=-x-1a | | 9x+4y=3 | | X/10+2=30 | | 5x+7=-x+37 | | x^2+(3-2y)x+y^2-3y+2=0 | | -8-3=x | | -32-3b=10-9b | | 75(24-20t)+9t=2(5t+1) | | 5/8=n+1/4n | | 20x^2-10x-9=0 | | 111-5b=10b+21 | | 12=3.4+x | | 7r-11=19 | | 24-6y=24-6y | | 5b+14=77-4b |