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k in (-oo:+oo)
5 = k+3 // - k+3
5-k-3 = 0
2-k = 0 // - 2
-k = -2 // * -1
k = 2
k = 2
| 6+n=16 | | 4=t-8 | | 10+a=10 | | -2+k=7 | | 2k=16 | | d/-6=4 | | k+9=16 | | -7k=-84 | | 15=a+4 | | d+6=18 | | b-8=-13 | | 5x+5=4x+15 | | -6x^2=-5x+6 | | .8(7-2x)= | | k+6=-4 | | 6+t=1 | | 9+n=8 | | 4p+5(1-p)=15 | | t(n)=4n-8 | | 3/4x=-12 | | -6=t-8 | | d/-7=-5 | | d+1=-4 | | f(x)=x^2+3x-28 | | -7t=-21 | | t(n)=4n+8 | | 5(x-4)-12=15-6(x+5) | | 17=n+6 | | 1+a=10 | | t/-4=-5 | | -2+m=6 | | -7w=28 |