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)
2/y-5 = 7 // - 7
2/y-7-5 = 0
2*y^-1 = 12 // : 2
y^-1 = 6
-1 < 0
1/(y^1) = 6 // * y^1
1 = 6*y^1 // : 6
1/6 = y^1
y = 1/6
y = 1/6
| 7p+9=44 | | 49x^2+81y^2=64 | | 4.6x-8=6.4x | | 4.6-8=6.4 | | 4+3+3x=2x+2x+4 | | 10x-6x=9-5 | | 3.6x-4=9.2x | | 2.3-.02x=.5 | | 20x+4=4(5x+1)-x+7 | | cos^7x+sin^99x=1 | | 7+.25m=-7 | | 9x^2-18xy-5x+10y= | | 4-9m+5m+2= | | x(x-8)+3=2x | | -6y-10=3+3y | | -6y-10=3 | | 6x^2=8x-1 | | 2x^2-4=-2 | | -2x+3=3.5 | | x-1/2=-5/18 | | 2+k=-3 | | 5x-9.2=19.7 | | 4/5=y/15 | | 9=2x+8 | | 3.6x+6=4.3x | | w/6=2/3 | | A=15x+45 | | .5(x-48)=12+5x^2 | | 1-2ex=-19 | | 7/2x=252 | | 2/7x=42 | | 0.044=log(x) |