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w in (-oo:+oo)
-7 = w-8 // - w-8
8-w-7 = 0
1-w = 0 // - 1
-w = -1 // * -1
w = 1
w = 1
| 12=n+10 | | 7=d+3 | | k/6=5 | | t+5=7 | | w+6=-2 | | 10+k=-2 | | -10+b=-8 | | 4+k=7 | | -7m=-21 | | -13=n-1 | | -15=n-5 | | d/-3=-2 | | 1=w-9 | | w/-6=-1 | | 2=m+2 | | 15=m+4 | | -8+m=0 | | -7=k+2 | | w-4=-16 | | b+5=-5 | | -6*x^2+5*x-6=0 | | n-8=-7 | | 2+x=-9 | | 9(3)+y=14 | | b-2=-7 | | 5=k+3 | | 6+n=16 | | 4=t-8 | | 10+a=10 | | -2+k=7 | | 2k=16 | | d/-6=4 |