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k in (-oo:+oo)
k-4 = -4 // + 4
k-4+4 = 0
k = 0
k = 0
| d/6=-3 | | -40-4x=8x-10x | | t-8=-8 | | 4+k=16 | | 9+t=6 | | n/5=-7 | | m-5=-1 | | -40-4x=8x+20 | | w+1=-3 | | w-2=-1 | | a-4=5 | | b-9=-17 | | 1=x+9 | | -8+n=2 | | -2k=22 | | -22=a-10 | | b+3=7 | | -5+k=0 | | a/7=-2 | | w-3=6 | | 17=n+5 | | 18=a+8 | | b-1=4 | | 4+k=-1 | | 9+b=10 | | 5+w=13 | | 9+m=0 | | k/7=-1 | | k+4=-3 | | 1+t=-8 | | -6=t+2 | | -6+t=5 |