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)
b+3/7 = -25/7 // + -25/7
b+3/7-(-25/7) = 0
b+3/7+25/7 = 0
b+4 = 0 // - 4
b = -4
b = -4
| a/-3=-2/5 | | w/4=-1/7 | | n+1/2=-17/2 | | x-1/10=29/10 | | 2/3a=1/3 | | -1+x=-2/7 | | b-1/2=23/2 | | k-2/5=48/5 | | k-3=-7/2 | | a-4/7=-11/56 | | -65/7=x+5/7 | | 3=b+2 | | t/6=4 | | -67/77=x-1/7 | | 10+t=105/11 | | (x–2)2=25 | | 6+d=7 | | k/5=-5/7 | | 13/6=m+3 | | 2/7+b=20/21 | | d/7=-1 | | w+5/6=-13/6 | | b/7=-6 | | 9=t+7 | | 3/10+w=81/70 | | b/4=-4 | | b-1/9=62/9 | | 4/5+t=2/5 | | 39/5=x-1/5 | | t-4/9=77/9 | | t+1=0 | | t-2=-10 |