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+4 = 0
x+1 = 0
x+4 = 0
x+4 = 0
x+4 = 0 // - 4
x = -4
x+1 = 0
x+1 = 0
x+1 = 0 // - 1
x = -1
x in (-oo:-4) U (-4:-1) U (-1:+oo)
(30/(x+1))*(x+4)+10/(x+4) = 4/(x+1) // - 4/(x+1)
(30/(x+1))*(x+4)+10/(x+4)-(4/(x+1)) = 0
(30/(x+1))*(x+4)+10/(x+4)-4*(x+1)^-1 = 0
(30*(x+4))/(x+1)+10/(x+4)-4/(x+1) = 0
(30*(x+4)^2)/((x+1)*(x+4))+(10*(x+1))/((x+1)*(x+4))+(-4*(x+4))/((x+1)*(x+4)) = 0
30*(x+4)^2+10*(x+1)-4*(x+4) = 0
30*x^2+250*x-4*x-16+490 = 0
30*x^2+246*x+474 = 0
30*x^2+246*x+474 = 0
6*(5*x^2+41*x+79) = 0
5*x^2+41*x+79 = 0
DELTA = 41^2-(4*5*79)
DELTA = 101
DELTA > 0
x = (101^(1/2)-41)/(2*5) or x = (-101^(1/2)-41)/(2*5)
x = (101^(1/2)-41)/10 or x = (-(101^(1/2)+41))/10
6*(x+(101^(1/2)+41)/10)*(x-((101^(1/2)-41)/10)) = 0
(6*(x+(101^(1/2)+41)/10)*(x-((101^(1/2)-41)/10)))/((x+1)*(x+4)) = 0
(6*(x+(101^(1/2)+41)/10)*(x-((101^(1/2)-41)/10)))/((x+1)*(x+4)) = 0 // * (x+1)*(x+4)
6*(x+(101^(1/2)+41)/10)*(x-((101^(1/2)-41)/10)) = 0
( x+(101^(1/2)+41)/10 )
x+(101^(1/2)+41)/10 = 0 // - (101^(1/2)+41)/10
x = -((101^(1/2)+41)/10)
( x-((101^(1/2)-41)/10) )
x-((101^(1/2)-41)/10) = 0 // + (101^(1/2)-41)/10
x = (101^(1/2)-41)/10
x in { -((101^(1/2)+41)/10), (101^(1/2)-41)/10 }
| 8x-22=-14+4x | | 7x-1=5x+3 | | 8(-2X-4)+12=-50 | | N+4.3=5.1 | | (x+3)(3x+10)= | | (3/(x-6)(x+6))=(2/(x-6))-(5/(X+6)) | | (5x+8)(3+x)=0 | | 0=-16x^2+8x+48 | | 4.4=s/2 | | 5.5v=-55 | | 0=4+n5 | | 4x/x-6+2=12/x-6 | | 8m-11=4+7m | | (4x+1)(5x-7)= | | -10=2.4+b | | 3/(x-6)(x+6)=2/(x-6)-5/(X+6) | | 3x+x=340 | | 5d+5y=10dy | | -3.5a=14 | | F^3/f | | N/8=-4.4 | | -1k+-14=-17 | | 3x+10=36 | | 4=9+5a | | 3/(x^2-36)=2/(x-6)-5/(X+6) | | 6=-2.9+c | | graphy=x-8 | | 1+-m=1-2m+2m | | 3s=-12 | | 46.2=-6.6y | | x^3y^-8/z^-3 | | X-4+6r=3+8r |