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)
-2/15 = 5*x+x-(4/5) // - 5*x+x-(4/5)
4/5-(5*x)-x-2/15 = 0
4/5-5*x-x-2/15 = 0
2/3-6*x = 0 // - 2/3
-6*x = -2/3 // : -6
x = -2/3/(-6)
x = 1/9
x = 1/9
| 1/7b-3/4+4/7b=59/28 | | -3/7n-7+3/5n=-2713/385 | | -6+1/3w-7w=-11/6 | | 1-2/3k-5/7k=34/63 | | -8/9+2k+5/6k=-367/126 | | -1/2b-7/8+1/7b=-7/8 | | 7k-1+k=15 | | -1/3+1/5k+2k=163/105 | | 5/6d+3+d=103/27 | | 2/7+7k+4k=-614/7 | | -m+1/3+3m=-71/3 | | -433/63=4/7t+2/3t+5/9 | | -8-7x+3x=24 | | -5x+5/8+3/4x=83/24 | | 6/7t+7/8-2/7t=305/56 | | 1/4n+10+3n=255/32 | | -m+1/2-6m=27/5 | | 1/6+7b+2b=173/66 | | -w+1-4w=-54 | | 1/3n+9+n=35/3 | | 5/9+3w+5w=53/9 | | -7-3/7k+2k=-87/14 | | 1/2+6/7b-4/7b=15/14 | | 2/5-5/6t-6/7t=481/315 | | 3/4w-7/10-w=9/5 | | 1/8-1 | | 268/45=4/5k+3k+3 | | 2/7t+2/9+4t=824/63 | | -4/7m+1/3+m=97/21 | | -7/10=-1/2a+1/5a-4 | | 1/6+5/7x+3x=229/126 | | 2+m+4m=57 |