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n in (-oo:+oo)
6 = n+5 // - n+5
6-n-5 = 0
1-n = 0 // - 1
-n = -1 // * -1
n = 1
n = 1
| 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 | | -3=t+1 | | -3+v/3=18 | | (2x)(2x)-36x+81=0 | | 63-7x=11x+21 | | 1=k-2 | | 2k=-16 | | 14=n+9 | | -1=k+7 | | (7+(-3x-1))((2x-1)+-3)= | | 2t=0 | | -1+b=10 | | -9+n=1 | | 197-7x=38x+22 | | 3=b+7 | | a/2=-3 | | m+9=21 | | k+7=14 | | -6k=-12 | | 1+m=-11 | | 8+t=10 | | -7=k+3 | | -8=w-6 |