If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(4/5)*x+(6/7)*x+8 = 106/35 // - 106/35
(4/5)*x+(6/7)*x-(106/35)+8 = 0
(4/5)*x+(6/7)*x-106/35+8 = 0
58/35*x+174/35 = 0 // - 174/35
58/35*x = -174/35 // : 58/35
x = -174/35/58/35
x = -3
x = -3
| x+5+7x=135/11 | | 2/7x+6-3/7x=73/12 | | 2/5+x+3/5x=26/5 | | 3/4-3x+2x=1/4 | | 8+7x-4x=67/8 | | 3/7x+3/4+2x=351/196 | | 1/2x-1+3/7x=6/7 | | 3/7x-5/6+2/3x=-51/98 | | 4+6/7x-1/6x=53/6 | | -2/5+x+2/3x=53/55 | | -317/45=-4/5x+3x-4/9 | | -6x+6-4/7x=164/35 | | -9+5/6x+6/7x=-1724/231 | | 1/2x+1+3x=9/2 | | 6+1/2x+x=27/5 | | 5x-9+6x=-41/7 | | 5x+1/4-2/7x=9/14 | | x+5+1/4x=5 | | 4/5x+1+3x=214/5 | | 1/7x+9+6x=52 | | -58/21=2x+5/7x-1/2 | | 3x+2/7-7x=-166/7 | | 1/2-7x-3x=71/22 | | 5x-3/8+5/7x=2371/504 | | 4x+8/9+x=53/9 | | -2/7x+3-4x=143/21 | | -2/7x-10+x=-74/7 | | 4x+5+x=40 | | 2x+3/7+x=54/77 | | 5/7x+5/7-1/2x=46/77 | | 4x+7+2x=31 | | 7/8-1/3x+x=-11/24 |