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)
-5 = b+7 // - b+7
-b-7-5 = 0
-b-12 = 0 // + 12
-b = 12 // * -1
b = -12
b = -12
| m+2=-9 | | m-1=-7 | | a+4=-4 | | w-3=5 | | t+2=-7 | | -7=t-3 | | 8=d+2 | | x-1*3=x+1*4 | | 3m=33 | | w+10=14 | | -3+k=4 | | 10+n=16 | | 2*a*in(x)+in(y)=in(5) | | 8+b=8 | | w+10=16 | | k/-6=4 | | 1+a=7 | | 11=n+1 | | d-2=10 | | 1-2x=9x | | b+2=-3 | | b/3=4 | | -4m=-44 | | 5+t=1 | | 2t=22 | | w/5=-3 | | 8=t+8 | | k+10=19 | | n/5=7 | | 6=b-2 | | 139-4x=5x+13 | | 7k=21 |