If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( y )
y = 0
y = 0
y = 0
y in (-oo:0) U (0:+oo)
(y-3)/y = 8/5 // - 8/5
(y-3)/y-(8/5) = 0
(y-3)/y-8/5 = 0
(5*(y-3))/(5*y)+(-8*y)/(5*y) = 0
5*(y-3)-8*y = 0
-3*y-15 = 0
(-3*y-15)/(5*y) = 0
(-3*y-15)/(5*y) = 0 // * 5*y
-3*y-15 = 0
-3*y-15 = 0 // + 15
-3*y = 15 // : -3
y = 15/(-3)
y = -5
y = -5
| x^2-4x-7=-6x+1 | | 19-13=x/5 | | x^2+20x+31=7x-5 | | 1/4x-7/7x=25-55 | | 2x+3y=125 | | 27x-31x=5-9 | | x+3y=125 | | 4y+14=6x | | .25x+0.375x=5 | | 28y^2-3y-1=0 | | 3z=2.4+1.2 | | x^2+11x-65=8x+5 | | -13(5)+(-0.875x)=-79 | | 3b^2-15b+11=-6 | | (12x+15)+(10x-5)= | | 54=13y-4y | | 7y+5x=11 | | 5y-10+y+30=8y+20-6y | | 4*7/8 | | -3+-3-4= | | 8+2(3-2x)= | | 4-2(y-5)=3y+6 | | t^5+80t-21t^3=0 | | 4(x-2)=-x+14 | | 9v^2-9v-10=0 | | 5(x+2)-3=-15 | | 12x^2+37x+25=2x | | 14-2(3-2x)=7x+5 | | -2m^2-2m-8=-5m^2 | | x+y=111 | | (5+z)(4z-2)=0 | | 25-2xmore=200 |