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)
28/x = 45/200 // - 45/200
28/x-(45/200) = 0
28/x-9/40 = 0
28*x^-1 = 9/40 // : 28
x^-1 = 9/1120
-1 < 0
1/(x^1) = 9/1120 // * x^1
1 = 9/1120*x^1 // : 9/1120
1120/9 = x^1
x = 1120/9
x = 1120/9
| 8x+4=-24 | | 3x+2x-1=x | | 1.5q-5.4q-4.8q=-4.3q-5.7q | | 4-3/5(3a=4)=7 | | 2r^2+12r+16=0 | | p^2+13p+36=0 | | 6x+11=4x+21 | | x-3x=6b-3x | | sin(200x)=sin(2000x) | | 360000=200/x | | sin(200*pi*x)=sin(2000*pi*x) | | 180+0.8y=y | | 4p+1=7p-3q | | x=2y+24 | | y=-(x-a)(x-b) | | r^2-17r+70=0 | | T(n)=2n-3 | | 9x-2y-18=0 | | Y=81-x | | 2(2x-4)=(x+4) | | 9/10-7/10 | | x^4-30x^2-216=0 | | p^2+p+16=0 | | T(n)=4+5n | | 5a+10b-50=0 | | 15x=120-x | | 5x-1=6x+2 | | (2b-3.4)/0.6 | | 2b-a=6 | | log(x+2)=8-ln(2x+1) | | y=cos(7*x) | | 7x+x=4x+(x+1) |