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)
6*x-(4/5) = 5*x-(31/20) // - 5*x-(31/20)
6*x-(5*x)-(4/5)+31/20 = 0
6*x-5*x-4/5+31/20 = 0
x+3/4 = 0 // - 3/4
x = -3/4
x = -3/4
| 7+2x=4/5x+337/55 | | -1-4d=-1/3d-34 | | 6+1/4d=-2/5d+159/20 | | 6/7-3w=6w+636/7 | | -2/7b-3=94/7+3b | | -d-1/2=-23/6+2/3d | | -3/10-5x=-3x-23/10 | | 6x+7=4x+39/5 | | 4a+1/9=1402/63-3/7a | | 4+1/2k=4k+41/12 | | -1/4b+3/4=27-4b | | 1+k=-k-21 | | 6a+1/7=3a-188/7 | | -6k+7=-6/7k+53/14 | | -2/7k+4=k+65/14 | | -4/9+5m=3/4m+191/144 | | 6-4k=1/3k+17/5 | | 3/4w+1/2=5w-185/4 | | 4/7d+9=801/77-2d | | -1/4w+1/2=2w-17/2 | | -4/5+1/3m=6m+158/15 | | 1/3m-3=-4/7m-86/35 | | 5m+1=7m+25 | | 3/4x+6/7=-x+6/7 | | -1/3x-2/5=-62/5+x | | 4+4/5a=2/3a+62/15 | | 6/7m+3/4=129/28-3m | | -7n+1/2=6/7n-199/42 | | 1/2+2/5w=2w+53/10 | | 5-b=-1/2b+41/8 | | 4t+4/9=53/18+t | | 8-t=4/5t+94/5 |