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n in (-oo:+oo)
9 = n+6 // - n+6
9-n-6 = 0
3-n = 0 // - 3
-n = -3 // * -1
n = 3
n = 3
| b/-2=5 | | 5+d=12 | | -2=d-3 | | 15=t+6 | | -3+m=-2 | | 0=w-3 | | -3=a-8 | | 7+n=19 | | 2.4x+4=9x-36 | | -7w=-84 | | k+1=7 | | a+10=22 | | 2+w=-1 | | m-7=0 | | w/-7=-3 | | t-8=-14 | | b+9=11 | | d+3=7 | | n+5=4 | | k+7=17 | | d-9=-19 | | Y-4=6y-19 | | 5+n=9 | | 14=a+7 | | 5=n+6 | | w-5=4 | | -2=k-10 | | 5q+11=9q-5 | | -39.00+x=17 | | 10+d=5 | | 3d=-36 | | 7=d+8 |