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)
18/22 = 45/x // - 45/x
18/22-(45/x) = 0
18/22-45*x^-1 = 0
-45*x^-1 = -9/11 // : -45
x^-1 = 1/55
-1 < 0
1/(x^1) = 1/55 // * x^1
1 = 1/55*x^1 // : 1/55
55 = x^1
x = 55
x = 55
| 23=3-d | | m(n+2p)=3 | | 5(5x-8)=33x-27 | | (-31)=(-21)-g | | 5-6z=0 | | y=(-2*-5)-5 | | 4-3x=2x-10 | | 5d-3=38 | | pq-3y= | | 18x=4.5 | | 146+(4z+2)=180 | | 33+4s=85 | | (-38)=(-16)+a | | 5b-5-8b-8= | | 7-5a=a-18 | | 5y-zy= | | 40-2f=-32 | | 1x-(4-1x)=0 | | 34+y=180 | | 68=x+7+2x | | 2-k=(-14) | | 17-7u=59 | | 4(6x-4)+3(12-5x)=4(2x+4)-6 | | (4z+2)+90=180 | | -5x-9y=15 | | 12+5x=35x | | 20+40x=200 | | 2/3(-27)=-18 | | m+(-8)=11 | | 14=y+(-9) | | 10x+0.10=0x+0.36 | | 10y+5-6y=1 |