If it's not what You are looking for type in the equation solver your own equation and let us solve it.
M in (-oo:+oo)
M/2 = 12 // - 12
M/2-12 = 0
1/2*M-12 = 0 // + 12
1/2*M = 12 // : 1/2
M = 12/1/2
M = 24
M = 24
| -x+-2x-8=x | | 2x+3x+6-1=20 | | X/2-25=-1 | | 5x+6y+15=0 | | 36x/20x^6 | | 49.2+x=62 | | 1/9x=6 | | 8p+4=-p+7+2p+3p | | x+3x+3+7=26 | | 42.7+x=62 | | -(4Y+1)-(-3Y-8)=8 | | -101.086(-35)= | | -x+2x-8=x | | x+1+x+7+x+3=90 | | 15tan=27 | | 0.12(6)+0.02X=0.06(6+X) | | 2ln(1+m)=8 | | 1/4x=2x-5 | | 6x+2x-x-8-4+1=38 | | 5(2x-12)+21=2x+41 | | x-9x+28=0 | | 43+10+x=180 | | 4(c+4)=6c+10 | | 43+10+x=90 | | 5x-(100+2x)=4x-2(10+x) | | -30=-6y | | 1/4=2x-5 | | 9-5=-21 | | 7n+x+5= | | x=ky+c | | -4w+40=3(w-3) | | 5x-2x+11-4-1=24 |