If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
4*x-16 = 0
4*x-16 = 0
4*x-16 = 0
4*x-16 = 0 // + 16
4*x = 16 // : 4
x = 16/4
x = 4
x in (-oo:4) U (4:+oo)
(3*x-15)/(4*x-16) = 0
3*x-15 = 0 // + 15
3*x = 15 // : 3
x = 15/3
x = 5
x = 5
| 3x-15/4x-16 | | 9x-8y=69 | | 2+v/4=-2 | | 6p=10 | | 2=n/5-4 | | 11y-12=4y-4 | | 5y-2x=-8 | | 4z=64 | | n/2-10=-6 | | t-3+2t+4= | | 6x-7y=40 | | 8-4b=2-7b | | (n-9)*20=50 | | N+12.8=-.3 | | -9d-24=3-(d+8)-6d | | (n-5)*3=18 | | 7(y-3)=10(y-2) | | -l^2+13l-12=0 | | 12b=144 | | -3x-4+5=2x+2-15x+1+13 | | 3x^2+2x=-4 | | -2x+13x=16+4 | | (x^-2y^5)^1/2/y^-7/4x^5 | | X^4Y^2Z^4+X^2Y^4Z^2+X^3Y^6Z^2+X^2Y^2= | | 16=d+21 | | 21=d+21 | | x^3y^2z^6+x^2y^2z^2+x^4y^2= | | 2x+10=23-9x | | X^4Y^2Z^4+X^2Y^4Z^2+X^3Y^6Z^2+X^1Y^1= | | 4+3=2y+10 | | 3.5=2+5m | | 4x+3x+5=27 |