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)
5/8-(2/5) = 1/y // - 1/y
5/8-(1/y)-(2/5) = 0
5/8-y^-1-2/5 = 0
-1*y^-1 = -9/40 // : -1
y^-1 = 9/40
-1 < 0
1/(y^1) = 9/40 // * y^1
1 = 9/40*y^1 // : 9/40
40/9 = y^1
y = 40/9
y = 40/9
| -3(3y-5x)-4= | | 34-5x=15 | | x-0.80x=112 | | d(4d-2d+4)= | | ln(x/160)=-854.7029108 | | 21x^3y-8x^2-4xy^3/9x^3y-4xy^3 | | (4x+3)=28 | | 6x=2x+124 | | x=2(7/6)-5 | | 5t+3=3t+15 | | T-h=x | | -6.0r=0.5 | | 6x+2x+124= | | 5x+6x=43 | | 12+8a=3a | | x^2+y^2+12y+32=0 | | x-0.80=112 | | 4t-5=-32+t | | q/5q-4=1/3 | | (4,2)(9,-2)= | | 16x^3-32x^2-x+2=0 | | 22-(x+5)=6x-4 | | 100-10x+2-7x=90-20x | | 3t^4-48=0 | | 3(x-1)=16(x+2) | | 8x^2-x-34=0 | | a(x+5b)=3csolvex | | -7+4z+4-2z= | | a(x+5b)=3c | | 2(3x+2)=3(2x-5) | | -3(x+5)-45=4-43 | | -32x^2+16x=0 |