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-3 = 0
x-3 = 0
x-3 = 0
x-3 = 0 // + 3
x = 3
x in (-oo:3) U (3:+oo)
1/(x-3) = 0
x belongs to the empty set
| 4x+7=7x+(-5) | | 4(5x+4)+6(x-3)= | | 7x-7=-3x+-27 | | 9x+6=-4x+58 | | 9x-4=5x+28 | | 3n=11/2 | | r^2-54=3r | | 10x+15x+50=-75 | | 5(w-3)=-12 | | 8x+6=6x+10 | | (xln)-7=0 | | 4(4x+2)+7(x-3)= | | 72+4x=0 | | 3x-8=-5x+-32 | | -(5/6)x=30 | | 7x+2=-9x+-126 | | (lnx)-7=0 | | x=31x+75 | | 19x=23x | | lnx-7=0 | | 4x-48=64 | | 2x-7=9x+(28) | | 12x+28=16x-56 | | 4x+5=8x+(21) | | -2x-6=-7x-3 | | 8x-2=-5x+-54 | | 6x+7=-3x+-11 | | -[9z-(18z+9)]=9+(8z+1) | | 12x+16x+28=-56 | | 6x-6=2x+26 | | 6x+4=2x+36 | | 71.1x=389.2+1.6x |