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)
x-(12/x) = 5 // - 5
x-(12/x)-5 = 0
x-12*x^-1-5 = 0
1*x^1-12*x^-1-5*x^0 = 0
(1*x^2-5*x^1-12*x^0)/(x^1) = 0 // * x^2
x^1*(1*x^2-5*x^1-12*x^0) = 0
x^1
x^2-5*x-12 = 0
x^2-5*x-12 = 0
DELTA = (-5)^2-(-12*1*4)
DELTA = 73
DELTA > 0
x = (73^(1/2)+5)/(1*2) or x = (5-73^(1/2))/(1*2)
x = (73^(1/2)+5)/2 or x = (5-73^(1/2))/2
x in { (5-73^(1/2))/2, (73^(1/2)+5)/2}
x in { (5-73^(1/2))/2, (73^(1/2)+5)/2 }
| 12a^2116A+160= | | -2y+3=4y-9 | | r+2(r-7)=1 | | 10x+95=1095 | | 5m+7=-m-11 | | 5=12-g | | 18-p=15 | | 2(ze+3)=4(4e+a) | | -5/3=1/5v-7/4 | | 22=-2y | | 4=x-2.6x | | 8+1t=0 | | 3x^2+2x^2= | | 20=15+m | | 3x+40=6x-7 | | d=ab-c | | 7/4-v1/5=-5/3 | | 50x+13.25=x+25.75 | | -3.2x=2 | | 2(2x+4)=-20 | | x^7/3 | | 3x^2-41x+116=0 | | 5(x-2)(x-2)-40=80 | | -2(y+6)=6y+36 | | Χ/6-(Χ-1/2)/3-1/3*(2/5-Χ/3)=0 | | -7(7x-9)=-378 | | 32+2y=6y | | 4+8x=60 | | -44-33= | | y^2+y=9 | | s*5-17=103 | | 4(-8+x)=-64 |