If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( y )
2*y+10 = 0
y+5 = 0
2*y+10 = 0
2*y+10 = 0
2*y+10 = 0 // - 10
2*y = -10 // : 2
y = -10/2
y = -5
y+5 = 0
y+5 = 0
y+5 = 0 // - 5
y = -5
y in (-oo:-5) U (-5:+oo)
3/(y+5)-1 = (4-y)/(2*y+10) // - (4-y)/(2*y+10)
3/(y+5)-((4-y)/(2*y+10))-1 = 0
3/(y+5)+(-1*(4-y))/(2*y+10)-1 = 0
(3*(2*y+10))/((y+5)*(2*y+10))+(-1*(4-y)*(y+5))/((y+5)*(2*y+10))+(-1*(y+5)*(2*y+10))/((y+5)*(2*y+10)) = 0
3*(2*y+10)-1*(4-y)*(y+5)-1*(y+5)*(2*y+10) = 0
y^2-2*y^2+7*y-20*y-50+10 = 0
-y^2-13*y-40 = 0
-y^2-13*y-40 = 0
-1*(y^2+13*y+40) = 0
y^2+13*y+40 = 0
DELTA = 13^2-(1*4*40)
DELTA = 9
DELTA > 0
y = (9^(1/2)-13)/(1*2) or y = (-9^(1/2)-13)/(1*2)
y = -5 or y = -8
-1*(y+8)*(y+5) = 0
(-1*(y+8)*(y+5))/((y+5)*(2*y+10)) = 0
(-1*(y+8)*(y+5))/((y+5)*(2*y+10)) = 0 // * (y+5)*(2*y+10)
-1*(y+8)*(y+5) = 0
( y+5 )
y+5 = 0 // - 5
y = -5
( y+8 )
y+8 = 0 // - 8
y = -8
y in { -5}
y = -8
| 5+w=3 | | -27=w-4 | | 8(x-4)+4=-10-3(x-3) | | 4.25x^4-5=12 | | 31=6e+7 | | 25=3b-5 | | 19/21t=38/7 | | 5=2c-3 | | 3/4X=75000 | | 12(x-3)=2(6x+5)-46 | | 1/10x+2y=120 | | 32=4r+4 | | 2/x+3/5x=1 | | x+7=2x(y-7) | | x/24=-3/10 | | 5p+7=32 | | K/45=6 | | 4f-4=0 | | 1/2x-4=5 | | 6x^2-15=27x | | v=vi+at | | 7K-4K=9 | | 30.24/1200=r | | 6x+32=8x+19 | | (5.7x-0.8)-(4.9x-1.4)= | | 5(12+10k)+10k=-10-10k | | 14x-4(9x-30)=395 | | 30.24=1200xr | | Y=2+0.5x | | 4(x-8)+7=-25 | | 8-(2a+1)=9+a | | 2+8x=-9(12+10x)+12 |