If it's not what You are looking for type in the equation solver your own equation and let us solve it.
n in (-oo:+oo)
(5/6)*n+5/9 = 80/63 // - 80/63
(5/6)*n+5/9-(80/63) = 0
(5/6)*n+5/9-80/63 = 0
5/6*n-5/7 = 0 // + 5/7
5/6*n = 5/7 // : 5/6
n = 5/7/5/6
n = 6/7
n = 6/7
| 4+4/5k=36/5 | | t+2/9=68/63 | | -k+3=11/5 | | 5/9-5w=-310/9 | | 7d+8/9=134/9 | | 3/4m+5/6=73/12 | | 2/5+2/7m=62/105 | | -1-2/7w=-71/63 | | -7a-9=-46/9 | | x-2=-8/5 | | t+4=-3 | | x+1/5=11/10 | | k/2=-1/5 | | x+3/7=62/63 | | 5d=15 | | 9=d-1 | | a+1/4=49/4 | | x+2=7/5 | | m+3=8 | | m+7=75/11 | | 2n=1/4 | | a+6=13 | | d+6/7=-43/7 | | a-1/2=-1 | | n/4=5/6 | | t-9=-69/8 | | -1/7=m-1 | | b+7=16 | | k/6=4 | | k-4=-13/3 | | a-7=-43/6 | | t-2=-6 |