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*b+1/2 = 7*b-(2/5) // - 7*b-(2/5)
4*b-(7*b)+1/2+2/5 = 0
4*b-7*b+1/2+2/5 = 0
9/10-3*b = 0 // - 9/10
-3*b = -9/10 // : -3
b = -9/10/(-3)
b = 3/10
b = 3/10
| 4+ln(27x)=22-2ln(x) | | b-7=6/7b-342/49 | | 1/3+n=6n-124/33 | | 3a-2=-7a-28/9 | | -5f/6-2/3=4/3 | | 7d+3/5=-6d+3/5 | | 6-2d=2/5d+6/5 | | -5/7d+5/6=-7d+5/6 | | x+21/3=5 | | -7+k=6k-71/8 | | 6k-1/3=4/5k+53/75 | | -2/7m+1/2=6m-57/14 | | -1/2d+8=113/14+2/7d | | -8(t+3)=40 | | -3/8+5/7k=2/3k-173/504 | | 2/3x-5/8=-x-135/88 | | 2k+2=-13+7k | | -5x-9=-6x-12 | | 5k-3/7=k+69/35 | | -1/6n+4/9=-2/5n-13/18 | | 1-1/5d=6d-274/5 | | 1/4x+7=13/6-7x | | 2/5+1/2a=3/4a-7/20 | | 2+2/5d=-5d+307/5 | | 2m-6=-26+7m | | 4-b=-2/3b+1 | | x+17+3x=-13-3x-19 | | -1/4a-5=a-45/4 | | 2+5/6b=-b+23/6 | | 5/7-2x=2/7x+5/7 | | 6m-5/9=218/45-3/4m | | -3/8-6k=4/5k+1073/40 |