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)
18/12 = m/42 // - m/42
18/12-(m/42) = 0
3/2-1/42*m = 0 // - 3/2
-1/42*m = -3/2 // : -1/42
m = -3/2/(-1/42)
m = 63
m = 63
| 6d+5d=-11 | | 3x+2-4(8-7)=90 | | 10+x-1/3x+0 | | 35=-5+2g-7g | | b+27.51=36 | | -8n-3=-11 | | b/2-4=-8 | | -8n-3=-10 | | -8n-3=-83 | | x/2-5=-7 | | 2y^2-7y-15= | | 6x+45=9(x+5)-3x | | r/5+2=0 | | x/0.25 | | -1/5p+3/4p=11 | | -y=2(-2)-8 | | w+31=50 | | 2x+y+1=0 | | 6.7+p=10.4 | | 21+d=52 | | 2=n+1-1 | | s+17=38 | | 9x=9y+36 | | 1/3d=-6 | | 34+r=62 | | 25/6+b=10/2 | | 5x+5x=-6+1+6x+3x | | 10y-2=8y-1 | | 36a=32 | | 6x-9=24/18 | | 9r^2+12r-4=0 | | -y=2(0)-8 |