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)
3/y = 15/35 // - 15/35
3/y-(15/35) = 0
3/y-3/7 = 0
3*y^-1 = 3/7 // : 3
y^-1 = 1/7
-1 < 0
1/(y^1) = 1/7 // * y^1
1 = 1/7*y^1 // : 1/7
7 = y^1
y = 7
y = 7
| x+5.04=4 | | 4m-11=29+m | | 20x^2+6+23x=0 | | 4x^2+15+16x=0 | | 5=8*y | | 6r^2+13rw+6w^2=0 | | -18(n-10)= | | -18(n-10)=n | | 5z^2+3z+4=0 | | 10a+3+2a=39 | | (7/x+5)-(1/x-5)=0 | | 12f^2-4f-5=0 | | 7r^2-36rs+5s^2=0 | | -3t+t-9t= | | 3x^2+6x+11=0 | | 25u^2-15u-18=0 | | -9/2-3/1 | | 9x^2-27xy+20y^2=0 | | 9x^3+2x^2+3= | | -5t+t-9t= | | 12x^2+3+13x=0 | | 25x^2+8+30x=0 | | 2x^2y^5/8x^3y^5 | | 24c^2-10cd-25d^2=0 | | 2p+1=-11 | | 6+2y-3=9y+8-6y | | 4+5a-14=4a+2a+14 | | 196x^2+84x+18=0 | | 17y+16y= | | -3(a+3)= | | -10(m-1)= | | 4y-1=-5 |