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)
(1/7)*m-((2/3)*m)-1 = -17/28 // + -17/28
(1/7)*m-((2/3)*m)-(-17/28)-1 = 0
(1/7)*m+(-2/3)*m+17/28-1 = 0
-11/21*m-11/28 = 0 // + 11/28
-11/21*m = 11/28 // : -11/21
m = 11/28/(-11/21)
m = -3/4
m = -3/4
| -14/33=3m-6m+2/3 | | -x^2+36x-87=0 | | x+8/9+4/5x=-1/9 | | -2/5a-1-4a=-21/5 | | 7d-1/2+6d=207/2 | | 51/35=3d-6d+3/5 | | -1=-3t-1/2t-1 | | -4/5a+2/7-3/4a=337/420 | | 5+k+4k=19/2 | | 1+1/6a+2a=41/2 | | -5t-3+6/7t=95/7 | | 59/10=-1/2d-2/5d+5 | | 3/7n-8-6n=-470/49 | | -828/35=5/7d+5d-4/5 | | 6+4/5k-4k=-66/5 | | 5/8-2/3m+7m=-443/264 | | -5/7t-5/9-6/7t=-5/9 | | 2/9+6x+5x=-1087/9 | | 7/8-5b+4b=-81/8 | | 2(x^2+2x)=96 | | 18=5m-1/3m+4 | | 7w-2/5+3w=548/5 | | 4/7k+2-2/3k=121/63 | | 124=6n+5n+3 | | 5d-1/10-3/4d=163/70 | | 4k-9/10+2k=-9/10 | | 10=-2d+5d+10 | | -3/4+3/4n+6n=-273/4 | | 131/168=-4/7a+2/3a+7/8 | | 6w+6/7+3w=762/7 | | 6a+3+1/3a=46/9 | | 2k+3+k=36 |