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)
15/10 = 9/x // - 9/x
15/10-(9/x) = 0
15/10-9*x^-1 = 0
-9*x^-1 = -3/2 // : -9
x^-1 = 1/6
-1 < 0
1/(x^1) = 1/6 // * x^1
1 = 1/6*x^1 // : 1/6
6 = x^1
x = 6
x = 6
| 3p^2-9p-8=0 | | 6(x-y)-4(x-y)= | | (xy)3= | | 1/2(2r+8)=3-2r | | 18/12=24/x | | x/56=15/14 | | 5(n-3)-3n=2(n-7)-1 | | y=-(1/5)(-2)+3 | | x^2=10x+x | | 42.42=5s+4.67 | | 7x-2y+3-9y+4+5x= | | 25x+14x=27.50 | | 3(2)-2y=5 | | 3(1)-2y=5 | | 14x+27.50=11x | | 3(0)-2y=5 | | 3(-1)-2y=5 | | 16x-8+120=180 | | 3(-2)-2y=5 | | x+89+80=180 | | 3(2x+2)=8x+2-2x+4 | | x^2+9x-24=0 | | 3/4(2) | | x+2y+z=7 | | x+99+89=180 | | 1/2(2x-7)-1/3x-4/3x-5 | | 10+2k=12 | | 15=9x+40 | | 7x+5+75=180 | | -2/3*-3/4 | | 4x+6y-8y=6(x-1) | | -2/3*3/4 |