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Mathematics 7 Online
OpenStudy (anonymous):

What expression is equivalent to ? |a|≤ 4? a ≥ –4 or a ≤ 4 a ≤ –4 or a ≥ 4 a ≥ –4 and a ≤ 4 a ≤ –4 and a ≥ 4

OpenStudy (anonymous):

a≤4 and a≥−4

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