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a in (-oo:+oo)
-6 = a+5 // - a+5
-a-6-5 = 0
-a-11 = 0 // + 11
-a = 11 // * -1
a = -11
a = -11
| a/-2=5 | | 10=n+8 | | n+9=6 | | a+8=0 | | b-2=-13 | | -2b=-20 | | 4m=40 | | d/6=4 | | d-2=0 | | -1=x+7 | | x-2(x-1)=4 | | t-5=-6 | | 9=b+9 | | w+9=-1 | | -5w=-20 | | -4a=-12 | | k+2=-9 | | -10+t=-1 | | b+9=6 | | b+7=13 | | 16=t+10 | | -1=k-6 | | w/7=6 | | b/6=-3 | | t+8=10 | | 16=b+7 | | w+4=7 | | -9+d=-3 | | -2+m=-2 | | d/-4=-5 | | 8/7x=104 | | 7w=21 |