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)
4-2*b = 8 // - 8
4-2*b-8 = 0
-2*b-4 = 0 // + 4
-2*b = 4 // : -2
b = 4/(-2)
b = -2
b = -2
| 4+6x=76 | | 2a+4=-14 | | 2+5b=-18 | | 2x-11=x-14 | | 2(2x-5)=14 | | -5n+1=-14 | | 2k+2=16 | | -3-3k=-39 | | 4x+16=5x+13 | | -3w+10=13 | | 2+5b=52 | | 4(x+3)=5x+1 | | -2a-9=-9 | | -8=2(5x+1) | | 92-4x=41x+22 | | 6x+6=x+1 | | 3-2w=-19 | | 5(2x+4)=-30 | | 6m+2=56 | | -87x-7=-86x-29 | | 2+7t=30 | | 10+2n=10 | | x+9=3(3x-5) | | 10x+14=6x+114 | | 5x+10=6x+17 | | 30=4(4x+1)+10 | | 4k-6=-46 | | 6b+4=76 | | 6t-7=11 | | -6m-2=-26 | | 10-4m=38 | | -x-9=-10 |