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)
14/10 = 9/x // - 9/x
14/10-(9/x) = 0
14/10-9*x^-1 = 0
-9*x^-1 = -7/5 // : -9
x^-1 = 7/45
-1 < 0
1/(x^1) = 7/45 // * x^1
1 = 7/45*x^1 // : 7/45
45/7 = x^1
x = 45/7
x = 45/7
| 8x+3(80)=6x+480 | | 64r^2=25 | | 14/5z=40 | | 3j-8=2+5j | | 9/6=21/d | | -8y-6=-7y | | H(t)=-3t^2+4t | | X+2x-40+x+60=900 | | 6x-8=29 | | 1/2z=1/8 | | 15x+4x+28=180 | | 8x+1(80)=3x+240 | | (3-x^2)=2 | | -5-9u=-10u | | 2x+4=5y+5 | | 11x+90=90 | | 2(x+4)-7x=-12 | | 9n-6n^3= | | x-3x=-2x-19 | | 2-3d+5d= | | 3/8-10/7r=-187-8 | | 21x+21=25x+1 | | 3x910x36/6 | | -5u+18u=-13 | | -3(r-10)=-18 | | 8x+1(80)=6x+480 | | 80/6 | | 3(m-17)=-6 | | 3x^2+19x-5.7=0 | | 4xy-4xy= | | 11x+2=10x+12 | | 14x=4y-12 |