If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
2*x+3 = 0
2*x+3 = 0
2*x+3 = 0
2*x+3 = 0 // - 3
2*x = -3 // : 2
x = -3/2
x in (-oo:-3/2) U (-3/2:+oo)
(4*x)/(2*x+3)+6/(2*x+3) = 0
4*x+6 = 0
(4*x+6)/(2*x+3) = 0
(4*x+6)/(2*x+3) = 0 // * 2*x+3
4*x+6 = 0
4*x+6 = 0 // - 6
4*x = -6 // : 4
x = -6/4
x = -3/2
x in { -3/2}
x belongs to the empty set
| 3(r-2)=6r+18 | | .5(6x-10)=15 | | 4x+6x-144=56 | | -5x+3(0)=15 | | 34/5-7/15 | | 7a^2-10=9a | | |5x|=70 | | -5x+9x-32=20 | | 0=x^2+20x+100 | | 4x+10=2(x-6) | | (3x/4)*9=24 | | 0=4x^2+80x+400 | | 50x^3+16x-64000=0 | | 6-8x=81+29x | | 15y+2y=51 | | 15=10t^2 | | 9=477/r+15 | | 12x-12-11x=10 | | 5h-2(3/2+4)=10 | | -8x-65=x | | 40-4x=14x+16 | | x-65/-3=13 | | 2/14=k/21 | | 3/8+9/20=23/20+7/8 | | 9y-4(y+3)=44 | | 8n-3(n-6)=91 | | 6x+2y-3x+y= | | 5/8=g/32 | | 14n-55=9(n+85) | | 42/b=6 | | 149.6=(12+y)8.8 | | 2x-168+10x=60 |