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)
6*b+7 = 12 // - 12
6*b-12+7 = 0
6*b-5 = 0 // + 5
6*b = 5 // : 6
b = 5/6
b = 5/6
| 1/3n+2=14/3 | | 2/3-2b=1/6 | | 7b-2=13/11 | | 2b+7=-1 | | 1/2-1/2w=1/4 | | 5y-1/2=3y-2*1/2 | | (10b-6)-3(3b+3)=-3 | | 5y-1/2=3y-21/2 | | 6+1/7m=54/7 | | 1/5w+3/7=22/35 | | -1/3m+1/3=8/3 | | 2/3-4m=-130/3 | | 5/7a-8=-219/28 | | -6m+9=41/3 | | -1/5m+1=49/60 | | ba-cd=3a | | 1/2a+7=71/10 | | n+7=3n | | -5t+1/2=71/2 | | 2/3-2a=-64/3 | | 4k-10=22 | | 5k+7/10=257/10 | | 1/7x+7=193/28 | | 2t-3/8=93/8 | | 3/2+1/4-x/3=5/12 | | -1/3b+3/5=56/135 | | d-8=-65/8 | | 1-7a=3 | | 3b+4/5=49/5 | | -9-1/3w=-35/3 | | 4w-1=11 | | 4/5a+7=67/5 |