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)
1/2-4*m = (2/5)*m-29/30 // - (2/5)*m-29/30
1/2-4*m-((2/5)*m)-(-29/30) = 0
(-2/5)*m-4*m+1/2+29/30 = 0
22/15-22/5*m = 0 // - 22/15
-22/5*m = -22/15 // : -22/5
m = -22/15/(-22/5)
m = 1/3
m = 1/3
| -4m+1=7/3 | | -4m+1=-31 | | -4k=32 | | -4k=-20/9 | | 200=12113*x | | -4k-9=-37 | | -4k-8=-10 | | -4k-7=-3 | | -4k-6/7=-90/7 | | -4k-4/7=-144/7 | | -4k-3/4=79/44 | | -4k-1=-41 | | -4k-1=-17 | | -4k+9/10-2k=-171/10 | | -4k+6=44/5 | | -4k+6=-14 | | -4k+5/8=-27/8 | | -4k+5=-8+1/3k | | -4k+5+5k=35/8 | | -4k+4/5=164/5 | | -4k+10=-22 | | -4k+1/3-1/3k=-64/3 | | -4k+1=-43 | | -4d=48 | | -4d=20/7 | | -4d=-48 | | -4d=-16 | | -4d-9=-111/11 | | -4d-8=-40 | | -4d-3/5+7d=-6/5 | | -4d-3=5d-21 | | -4d-2/5=-162/5 |