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)
5/7 = 25/y // - 25/y
5/7-(25/y) = 0
5/7-25*y^-1 = 0
-25*y^-1 = -5/7 // : -25
y^-1 = 1/35
-1 < 0
1/(y^1) = 1/35 // * y^1
1 = 1/35*y^1 // : 1/35
35 = y^1
y = 35
y = 35
| b/9-1/2=5/10 | | 9x+7=14x-3 | | -101=6x+1 | | 112=8 | | 6x+6/3=4x-1 | | N-5n-5=1 | | -9n+(n-7)=6n-35 | | 6-2x=5x+27 | | x^2+27x+182= | | t/12=11 | | -7(-10+p)=-56 | | (.000000000067)(5970000000000000000000000)=4.9r^2 | | 21000=70x | | 15+4x+15=2x+6 | | 50+15(y+1)=35 | | 4p-3(-2+p)=-5p-6 | | 7+(t/(t+6))-(6/(t^2-36)) | | (-120)/(-100) | | (7x-5)^2/3-2=14 | | 20x^2=48+44x | | a^2-60= | | 9(x+6)+8(x+6)=7x-7 | | 4b=-5b+2(b+7) | | 2(x+1)=-10 | | -4/-10 | | 3p+28=-4p | | (-500)/(-300) | | 28+7k=7(3-2k)+7 | | 2x-y/-8 | | 3x-(-2)=1x+10 | | 7x+3=-3+4x+21 | | (7+4)+(3x+x+2x)=9 |