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k in (-oo:+oo)
2*k = 0
2*k = 0 // : 2
k = 0
k = 0
| 18=a+9 | | w+5=-3 | | (2x)(2x)-36x+81-1=0 | | 3(y-5)= | | 5x-6=30+0.5 | | b/2=-3 | | b+4=9 | | a+8=14 | | 8+n=14 | | k-9=-7 | | 10=k+1 | | 52=5x-8 | | 53=7x-10 | | 4v+5=-7 | | 9=w+6 | | 4=b-1 | | 6t=-66 | | t+7=18 | | 10+b=14 | | 0=b-9 | | 10+m=12 | | 6=n+5 | | 2+w=9 | | -8=d-1 | | -10=n-2 | | -5+a=1 | | b+2=-4 | | 6x-80=3x-11 | | -5+a=-16 | | 1+n=6 | | -5w=-30 | | -6+k=3 |