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n in (-oo:+oo)
-1 = n-8 // - n-8
8-n-1 = 0
7-n = 0 // - 7
-n = -7 // * -1
n = 7
n = 7
| d-7=-1 | | 8+a=-3 | | d+9=18 | | b/-4=-7 | | -3w=0 | | 6=a-1 | | 5+t=14 | | 8+t=12 | | 7+6n+4n= | | 2+k=12 | | 2t=24 | | 14x-20=78 | | 2+k=9 | | 4=b+9 | | 16=w+10 | | 3r+r= | | n+10=22 | | k/-7=-4 | | a+6=17 | | 3+b=-9 | | 7=w+6 | | 2+4h+3= | | 4k^2+k+44=0 | | 5(2x+3)=28 | | 4w=0 | | d/-4=-7 | | 6x^3-2x^2+4xy-2x= | | 4=a+10 | | 3-2+9k+6k= | | X^4+5x^3-4x^2-20x=0 | | -3=b+8 | | 3=n-5 |