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+36 = 0
x+36 = 0
x+36 = 0
x+36 = 0 // - 36
x = -36
x in (-oo:-36) U (-36:+oo)
0.5 = 42/(x+36) // - 42/(x+36)
0.5-(42/(x+36)) = 0
0.5-42*(x+36)^-1 = 0
0.5-42/(x+36) = 0
(0.5*(x+36))/(x+36)-42/(x+36) = 0
0.5*(x+36)-42 = 0
0.5*x-24 = 0
(0.5*x-24)/(x+36) = 0
(0.5*x-24)/(x+36) = 0 // * x+36
0.5*x-24 = 0
0.5*x-24 = 0 // + 24
0.5*x = 24 // : 0.5
x = 24/0.5
x = 48
x = 48
| h=-10x^2-27x+5 | | 42+x=56 | | y=1/4*x^2-x-7 | | 8.7b-0.4=17 | | 7-3x+8+2x-2=8+2*5 | | N-24=31 | | 4x+64+45=7/2 | | 27-p=3 | | 8/10=a/6 | | (a/b)=10a | | 2.2r+0.47=1.79 | | T+22=57 | | 43=6.2x+2.4x | | j/9-9=5/6 | | 0.13y-0.6=0.83 | | M-21=34 | | 5y-19=2(y-5) | | Y-19=18 | | 13y-0.6=0.83 | | 348=47h-18h | | 5/1 | | 18+p=22 | | 08d+0.4=0.96 | | 3*x+5-2= | | 3.4m+4.6m=72 | | 39-r=34 | | -3a+10a=49 | | 18+q=25 | | R-15=24 | | 8c+9c=51 | | X^3+2x-5=0 | | 1/3x+5=8 |