If it's not what You are looking for type in the equation solver your own equation and let us solve it.
k in (-oo:+oo)
-860/147 = (5/7)*k+(1/3)*k-6 // - (5/7)*k+(1/3)*k-6
6-((5/7)*k)-((1/3)*k)-860/147 = 0
(-5/7)*k+(-1/3)*k-860/147+6 = 0
22/147-22/21*k = 0 // - 22/147
-22/21*k = -22/147 // : -22/21
k = -22/147/(-22/21)
k = 1/7
k = 1/7
| 4/7n+6+4n=526/77 | | 5/7+2d-1/2d=-9/56 | | 6+4/7k-k=468/77 | | 7/3=3x-3/5x+5/6 | | 7+n+n=9 | | 12=-7b-6b-1 | | 29/154=-k+1/7k+1/2 | | 3m-6+2/5m=38/5 | | 4+3/4b-b=15/4 | | -53/70=3k+6/7k+1/10 | | 3/4+4k+k=23/4 | | -5/9+3/5t-t=-61/45 | | 374/9=5b+6/7b+5/9 | | 1/5-4/5b+2/7b=-9/35 | | -6+5/7a+1/3a=-40/3 | | 9+4/5d-4/7d=949/105 | | 2-3x+6x=23 | | 6x+6+5/6x=83/7 | | 1/8d-4+3/8d-4=5 | | -1/4=-1/3d+d-1/4 | | 1+3n+n=-3 | | 2(x+3)=4+8x | | -4/7n-6+4/7n=-6 | | 1/2t+2/3-4/5t=19/15 | | 4w-7+5w=1/2 | | 1/2x+9+2/3x=137/16 | | 5+7a+1/3a=27 | | -440/7=5x+4/7x+4 | | -5/9+1/2t+5/6t=-77/9 | | -3/40=-4n+3/4n+9/10 | | 6a-1/5+6a=539/5 | | 4=7n-2n+3 |