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-(6*x) = 0
4-(6*x) = 0
4-(6*x) = 0
4-6*x = 0
4-6*x = 0 // - 4
-6*x = -4 // : -6
x = -4/(-6)
x = 2/3
x in (-oo:2/3) U (2/3:+oo)
8/(4-(6*x)) = 0
8/(4-6*x) = 0
8 = 0
x belongs to the empty set
x belongs to the empty set
| 15=x+3-5x | | -177-3x=47-11x | | (x-1)=2x-1 | | 4x+4=9+x | | 5x-14=4x+9 | | 2x+(-89)=17 | | q(x)=x^3+3x^2-6x-8 | | 4n-16=92 | | -3x+z=-2 | | 6x-10=14+4x | | 3(3s+8)=132 | | log(x-6)=3.5 | | 25+1.25x=30+2.5x | | 105/15 | | log(q-6)=3.5 | | 10x-7=6x+4 | | 4x+10+6x=180 | | 3n+9=-9 | | 5.3-4xi-4+12.1xi= | | 8x+(-19)=-101 | | 300-6x=100+4x | | 4-5e^3x=-16 | | 50=2X-8+2X+10 | | 5x+2i=20+yi | | a(x-3)=c(3-x) | | 7x^2-116x-240=0 | | x-6.8=3.48 | | 5x+4-7x=14+15x-11 | | 7u+17=-3(u-9) | | 2n+-5=11 | | 2x-(-14)=45 | | 2b+18=-87 |