If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
37-x = 0
37-x = 0
37-x = 0
37-x = 0 // - 37
-x = -37 // * -1
x = 37
x in (-oo:37) U (37:+oo)
0.57 = 20/(37-x) // - 20/(37-x)
0.57-(20/(37-x)) = 0
0.57-20*(37-x)^-1 = 0
0.57-20/(37-x) = 0
(0.57*(37-x))/(37-x)-20/(37-x) = 0
0.57*(37-x)-20 = 0
1.09-0.57*x = 0
(1.09-0.57*x)/(37-x) = 0
(1.09-0.57*x)/(37-x) = 0 // * 37-x
1.09-0.57*x = 0
1.09-0.57*x = 0 // - 1.09
-0.57*x = -1.09 // : -0.57
x = -1.09/(-0.57)
x = 1.9122807
x = 1.9122807
| 14x^2+22x-12=0 | | x/-7+1=8 | | 6/x+4=8/x | | 5(-2)+2y=2 | | -27-8x=13-10x | | 2x+5-2=6x+8 | | 2x+6=81-3x | | 5r+3=4r+8 | | 138=(201+225x)/(4+x) | | -13=17-x | | 25=v+25 | | 25=v | | (n+7)(n-4)=0 | | (7n-8)(6n-2)= | | 125=(201+225x)/(4+x) | | 7-10x=45-24x | | 0,90(y+5+31)=y+31 | | 125=201/(4+x) | | h(t)=-16t^2+256t | | -4x+x+2=-1 | | 6p(p+3)=0 | | P=2(100)+2(146) | | X^2-21x-118=0 | | 2(5)+y=7 | | 4.315/5 | | 9x+12=4x+18 | | -12x+58000=1000 | | (0.4)(0.6)(0.02)= | | 3n-2=-29 | | 3.15=82/(22+x) | | 34.97=1329/(x+28) | | y+21+y-24=(21+y)/2 |