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)
9-m = 7-2*m // - 7-2*m
9-m-(-2*m)-7 = 0
2*m-m-7+9 = 0
m+2 = 0 // - 2
m = -2
m = -2
| 1-3x=-x+3 | | 2b+8=3b+2 | | 5w-1=-13+2w | | 5d-9=-6d-119 | | 6+2t=-t-12 | | -5n+4=-n-16 | | 6n+9=7n+12 | | a+1=3a+1 | | 2d-2=70-4d | | -2n-6=26+2n | | X+2x-1=0 | | -9-6w=7w-9 | | 5t+3=15+7t | | -4k+10=5k+46 | | -7t+9=-99+2t | | 7m-1=6m-3 | | 3b+9=-b+49 | | -2-2b=-5b-2 | | n-6=6n-11 | | -4k+8=-k+29 | | 5w+8=-3w+8 | | 15x-4.9x^2=-12 | | 7a-3=-27+3a | | 1-m=4m-49 | | 6+4w=7w-6 | | 6w+2=2w+26 | | w-10=-2w+11 | | k-8=3k-4 | | 1-a=-2a+3 | | -8+6n=-3n+28 | | -7x+2=-4x-10 | | 7+w=7w-11 |