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)
16/x = 2/7 // - 2/7
16/x-(2/7) = 0
16/x-2/7 = 0
16*x^-1 = 2/7 // : 16
x^-1 = 1/56
-1 < 0
1/(x^1) = 1/56 // * x^1
1 = 1/56*x^1 // : 1/56
56 = x^1
x = 56
x = 56
| 3/al=18 | | 9h/3−6=2h/3 | | 1430/80 | | 12/21=y/14 | | 75-9x=4 | | K-5+7k=43 | | 12/21=y/13 | | (3m)^2/5 | | 3(3x+4)=8x-15 | | 2x^4+14x^3+26x^2-350x+600=0 | | n/15=4/5 | | 98=4x+2y | | 1/12^3 | | An=50+(-80)(n-1) | | 3[m-2]-4[m+5]=10 | | 2m+10-7m=20-5m | | (x^3)-11x+1=0 | | 6b+1-10b=51 | | 0.4x=X+12 | | (8(z^3)-10)(8z)= | | 12.4+(-2+1.6)=N | | X=-12+3y | | -15+k=-8(8-k) | | 16=(3x-2)/(x-5) | | 19=c+(-12) | | -2(y+12)=1y-9 | | 9h/3-6=2h/3 | | 7x-2/5=-8x-4/2 | | (c/a)-(s/a)=1 | | 2x^3+5x^2+5x+6=x+2 | | -3m^2-28=6m^2+17 | | 3t-2+t-5t=1 |