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k in (-oo:+oo)
-14 = k-5 // - k-5
5-k-14 = 0
-k-9 = 0 // + 9
-k = 9 // * -1
k = -9
k = -9
| -6+n=-8 | | 2=w-4 | | -5k=-60 | | k/-2=7 | | -17=x-10 | | 5+d=0 | | -8=w+3 | | -2t=-16 | | -2w=0 | | d+4=14 | | 6+x=16 | | 17=n+9 | | -3=a+6 | | m/-3=7 | | m+4=10 | | 3+w=11 | | -1=m+5 | | t/6=5 | | x+3/3-x=x/x-1 | | -6t=72 | | -4+k=-4 | | 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 |