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)
5/20 = 9/x // - 9/x
5/20-(9/x) = 0
5/20-9*x^-1 = 0
-9*x^-1 = -1/4 // : -9
x^-1 = 1/36
-1 < 0
1/(x^1) = 1/36 // * x^1
1 = 1/36*x^1 // : 1/36
36 = x^1
x = 36
x = 36
| 18a^2-48a+32=0 | | x+-5=2x+1 | | -3(2x+7)=-6x-21 | | 1.5(m-3)=12 | | 2x+y=3.5 | | 3secx-5=-8 | | 3(2p+1)=7(-p)-6 | | x^2-4x^1+3=0 | | 3.4c-17=68 | | 9y=-x+9 | | -28(z-73)=z+6 | | 13x+5y=17 | | 6x+4x+4+8=5x+3+4x | | 4a^2+19a+12=0 | | (7.1)1.9= | | -2y+3=-9 | | -2y+3=-8 | | 5g+4(-8+5g)=1-g | | 74y-4884=y+(-72) | | 74y-4884=y+(-74) | | A-10=34 | | 16x-1.86x^2=0 | | (3x^2-5x)-(x^2+4x+3)= | | y=20+5x | | A=2400+144t | | 2(6z+1)-6=92 | | 7/8=y/56 | | 1.5y=1.25 | | 2h+7=2(h+2)+3 | | x-x/5=44 | | k/4=0.3 | | 4x+11=7x-5 |