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-9 = 0
x-9 = 0
x-9 = 0
x-9 = 0 // + 9
x = 9
x in (-oo:9) U (9:+oo)
-10/(x-9) = x/2 // - x/2
-10/(x-9)-(x/2) = 0
-10/(x-9)-x/2 = 0
(-10*2)/(2*(x-9))+(-x*(x-9))/(2*(x-9)) = 0
-x*(x-9)-10*2 = 0
9*x-x^2-20 = 0
9*x-x^2-20 = 0
9*x-x^2-20 = 0
DELTA = 9^2-(-20*(-1)*4)
DELTA = 1
DELTA > 0
x = (1^(1/2)-9)/(-1*2) or x = (-1^(1/2)-9)/(-1*2)
x = 4 or x = 5
(x-4)*(x-5) = 0
((x-4)*(x-5))/(2*(x-9)) = 0
((x-4)*(x-5))/(2*(x-9)) = 0 // * 2*(x-9)
(x-4)*(x-5) = 0
( x-4 )
x-4 = 0 // + 4
x = 4
( x-5 )
x-5 = 0 // + 5
x = 5
x in { 4, 5 }
| 2.5x+22=4x+10 | | 10v-8u+12=0 | | a+bi=15+9i | | ln(a)+ln(b)= | | c^2+6c+7= | | 3(15m-4)= | | 45+22x-3x^2=0 | | 3(15-4)= | | 3(15-4)=2m+3 | | 25k^2/(2k)^3 | | 2X^4+14x^3+20x^2= | | Y=-2(-4)+3 | | 2(x+10)=4(x+-15) | | y=AB-3 | | 7x-2[x-8]=5[x+1]+7 | | 5[x-3]+2x=7[x+2]-29 | | 16t^2+64t-192=0 | | -16t^2+64-192=0 | | 4y^2-27=x^2 | | 5x+-6=12 | | 250.00/1050 | | 12x+8=7-2x+6 | | y=.05x+2.8 | | u/4-1514 | | u/4-15 | | 8p-8-7p=3+4 | | 87=-3(4x-5) | | -85=-5(3+7r) | | -3(-6+4r)=90 | | -8(2v+6)=-96 | | 5=-10+a | | 5=10+a |