If it's not what You are looking for type in the equation solver your own equation and let us solve it.
t in (-oo:+oo)
(6/7)*t+8/9 = 400/693 // - 400/693
(6/7)*t+8/9-(400/693) = 0
(6/7)*t+8/9-400/693 = 0
6/7*t+24/77 = 0 // - 24/77
6/7*t = -24/77 // : 6/7
t = -24/77/6/7
t = -4/11
t = -4/11
| 4n-4=-12/5 | | 3/7+5x=55/14 | | -1/2d-1=0 | | 3/7a+1/3=-38/21 | | 1.3y=y+1 | | 5+6b=1/2 | | 3/10+3x=89/30 | | 2n-1/8=-1/8 | | 2k+8=14 | | 4+5t=34 | | 5m+3/7=143/7 | | 1/2k-2=-11/2 | | 5w+3/5=278/5 | | 9(3x-8)=2(2x-13) | | 6/7m+7=557/77 | | 5k+1/6=71/66 | | 5/7k-2/5=-2/5 | | -2/3b+1/8=65/8 | | -1/6a+2/5=109/360 | | 7+5/6k=37/6 | | -7m+1/7=148/7 | | 1/3x-1/2=-17/36 | | -4/7m+1/2=23/126 | | 4t+2/5=38/45 | | 2/5m-1=-11/10 | | 1/5w+2/7=34/315 | | 4/5a-4/7=-164/385 | | 3-7k=-60 | | 4m+1=0 | | 7x+3/8=79/24 | | 4+2/3t=6 | | 3/5m+4=26/5 |