Answer:
LCM(9, -1, -1, +2, +2, +2) = 2×3^2 = 18
Explanation:
9 = 32
-1 = -1
+2 = 2
LCM = 2×3^2 = 18
18 / 9 = 2
18 / -1 = -18
18 / +2 = 9
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