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log₆24 - 3log₆2+log₆12=log₆24-log₆2³+log₆12=log₆(24:8)+log₆12=
log₆(3*12)=log₆36 = 2
2.
x/3 - x ≤ 2x-1 /*3
x-3x ≤ 6x-3
-2x-6x ≤ -3
-8x ≤ -3 /:(-8)
x≥3/8
Najmniejsza x=1 ∈ C
3.
x-1>0 i x≠0
x>1
D=(1,+∞)