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)
12/y+15/y = 3 // - 3
12/y+15/y-3 = 0
27*y^-1 = 3 // : 27
y^-1 = 1/9
-1 < 0
1/(y^1) = 1/9 // * y^1
1 = 1/9*y^1 // : 1/9
9 = y^1
y = 9
y = 9
| 7.7-16.3= | | X/45=-43+8 | | 5+3x-x=25 | | 2+3*12-5+3=30 | | 5-n*3=4 | | x^5=438447.64y | | -4(2-8.2x)=30 | | 3/y-2/(y-2) | | 22.92=4g+3.52 | | (6x^2)+(3x)=0 | | -9.2w+3w= | | 4x+7+8x-1+90=180 | | 3x=6+2 | | 1/5(x+10)+5x=25 | | -5c/8=20 | | 2-9=14-6u | | 0.9x+0.9=2.2x-0.4 | | 3k+2j=3 | | (5/6x)+(3/8)=(2/3) | | 7x-(4x+3)=7x-11 | | 8(x+4)+3(-4x)=32 | | 5/7y-7/2=7/2y-1/4 | | 0.76x+0.21x=0.96x-0.49 | | -5w+8=-3(w+2) | | 1/2(x-8)+4x=10 | | 6(x+8)=5(x-8)+x | | 2p^3*9p^2= | | 1.5=7.1-0.7x | | 2x-(8x+2)=5x-35 | | -1/8w+3/4=-2/3w+1/6 | | 9X-6-4X=X+2+X | | -54=2x+7x+9 |