If it's not what You are looking for type in the equation solver your own equation and let us solve it.
d in (-oo:+oo)
6*d+d-1 = 55 // - 55
6*d+d-55-1 = 0
7*d-56 = 0 // + 56
7*d = 56 // : 7
d = 56/7
d = 8
d = 8
| 5-3a+2/3a=86/27 | | k+2+k=-18 | | 4/5b+4/5+5b=37/10 | | 5/9-b+2/3b=82/99 | | -123/20=-2/5a-6a+1/4 | | 4+2m-4/5m=256/55 | | 3x/5+x/2 | | (21x+1)=(14+4) | | w+2-2/3w=0 | | -38/5=m+1/2m-7 | | -1=-x-x-1 | | 5/6k+10-3/4k=61/6 | | 6x+1/2-2/7x=-793/14 | | 23=-4t+t+2 | | 7/8-4/5a-5a=-661/40 | | 557/8=2d+5d-3/8 | | 2/3+x+7x=26/3 | | 5a+1/2+7a=-215/2 | | 3/4d+2/3+2/7d=115/42 | | -1/6m-4+2m=43/3 | | 1/2+4k+2/7k=-653/14 | | -2/7a-7-4/5a=173/35 | | (3x+45)=(6x+9) | | -d-2-d=-8/3 | | -4465/63=7n+1/7n+5/9 | | 513x-73x-1= | | 1/2w+9+7w=87/8 | | 7/15=-1/3t-2/5t-1 | | -2/3t+1/2+7t=41/6 | | 2/9+7t-6/7t=401/63 | | -37/16=-3a+1/2a-2 | | 7/10-1/2a+2a=29/20 |