If it's not what You are looking for type in the equation solver your own equation and let us solve it.
b in (-oo:+oo)
(4/5)*b+5*b+4/5 = 37/10 // - 37/10
(4/5)*b+5*b+4/5-(37/10) = 0
(4/5)*b+5*b+4/5-37/10 = 0
29/5*b-29/10 = 0 // + 29/10
29/5*b = 29/10 // : 29/5
b = 29/10/29/5
b = 1/2
b = 1/2
| 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 | | 6/7+5/7k+5/6k=6/7 | | 113/25=-3b+3/5b+5 | | -5/7t+1-2/7t=13 |