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d in (-oo:+oo)
8 = d+3 // - d+3
8-d-3 = 0
5-d = 0 // - 5
-d = -5 // * -1
d = 5
d = 5
| a-2=-28/11 | | 9+b=91/11 | | m+9=94/11 | | n+1/2=-2/5 | | 4k=28/11 | | -1+t=-17/11 | | t-5=-53/10 | | -59/8=m+5/8 | | 2/5+n=-23/5 | | k-6=-11/2 | | -9/11=t-1 | | a-1=6 | | -23/5=x-4 | | d/3=5/7 | | w-4/5=-26/45 | | 4/5b=8/11 | | a+4=8 | | -47/9=k+7/9 | | 2/3a=8/21 | | -16/35=w-6/7 | | x+2/9=-14/99 | | -87/11=d-8 | | b-6/7=-31/28 | | w/-2=-4 | | t+1/2=-7/2 | | d-5/8=59/8 | | -1+t=1 | | t-2/3=-19/15 | | -7d=-14/9 | | 2+n=24/11 | | a+1=13 | | 59/11=k+5 |