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)
28/x = 6/54 // - 6/54
28/x-(6/54) = 0
28/x-1/9 = 0
28*x^-1 = 1/9 // : 28
x^-1 = 1/252
-1 < 0
1/(x^1) = 1/252 // * x^1
1 = 1/252*x^1 // : 1/252
252 = x^1
x = 252
x = 252
| 72=3(2a+6) | | 2(x-6)-4=22x-116 | | 42/294=x/259 | | -9x+2=18 | | 3+2(x-6)=-x+5(x-1) | | 18mn^2+40n-105m=y | | x/108=20/120 | | 4[t-3]+5=17 | | 4x-28y=12 | | 2cosine^2(x)+sine(x)=1 | | 2(6k-1)=46 | | 3/5w-5/4=-4/3 | | 2cos^2(x)+sin(x)=1 | | 0.06X^2-0.8X+1.96=0 | | 3(x+1)+5x=6(x+6)-1 | | y=5x-1-12 | | 2(6x+96)=(10x-42) | | (x+6)(2x-6)=0 | | -5(x-3)+2=-7(x+3) | | x/240=45/270 | | 3y-3+y+41=5y+40-3y | | 7x-5x-8+6=2x+7x-9 | | 5x+25=6x+3 | | X^2+54-180=0 | | 4y+4x=-12 | | -4x-9x+8=5x-7-3 | | 5=h+5 | | -65=5s | | Tgx=sorte(3) | | 5x+8=-1x+6 | | 2p-21=6p+39 | | -10+5x=20-10x |