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k in (-oo:+oo)
k+4 = 13 // - 13
k-13+4 = 0
k-9 = 0 // + 9
k = 9
k = 9
| a+10=17 | | -1+w=1 | | -1+m=10 | | d-5=0 | | m+1=-10 | | -6k=-30 | | -20=b-9 | | 2b=-12 | | w+6=13 | | t(4)=16+8 | | d+10=7 | | -4=m+8 | | w+6=-1 | | -10+k=-6 | | 5+b=14 | | 4(x-3)-14=16-7(x+4) | | 24+15w=24a | | m+10=13 | | 6+k=1 | | t(8)=8+32(8) | | 10=k+8 | | -6+b=-3 | | t-1=-6 | | t(4)=32+8n | | 8=w-4 | | 7+t=18 | | 2b=-4 | | 3+m=-2 | | k/5=-2 | | n-7=-17 | | a/3=4 | | 1+t=9 |