If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( m )
m = 0
m = 0
m = 0
m in (-oo:0) U (0:+oo)
6/m = -15/17.5 // + -15/17.5
6/m-(-15/17.5) = 0
6/m+0.85714286 = 0
6*m^-1 = -0.85714286 // : 6
m^-1 = -0.14285714
-1 < 0
1/(m^1) = -0.14285714 // * m^1
1 = -0.14285714*m^1 // : -0.14285714
-7.00000014 = m^1
m = -7.00000014
m = -7.00000014
| r*r/3r | | 12/w=-8 | | 5v^2+37+42=0 | | (2x+12)8=x+34 | | -35+x^2+2x=0 | | -3(t-3)+9t=4t-9 | | 2n-5=6n+3 | | X^2+5x-47=3(x-4) | | 4b+11=3b+9 | | 6a=4a+21 | | 7z+6=7z-z | | x+10y=x^2+y^2 | | 9200/24400= | | -8y+20=-6y | | 24400/9200= | | (2)3x-1+2=10 | | 14,700-6,300= | | 23x-1+2=10 | | 12+k/-4=8 | | 3x+8=8-2x-2 | | 2(4z-10)=5z-32 | | 4(-5)=-25 | | 7t+16=5t+18 | | 5x-16=51 | | t-(4+t)=6t | | 14-n=7-2n | | 4(4x-2)=x+2 | | f=1.5+2.5x | | 3x-10y=32 | | 9+6=3(9-4) | | 36x-3x=9 | | 16r/4+3(r+4)-5(-2r) |