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Verified answer
Semoga dapat membantu11 ≤ 3x - 7 ≤ 23
➡ 11 + 7 ≤ 3x - 7 + 7 ≤ 23 + 7
➡ 18 ≤ 3x ≤ 30 [÷ 3 ]
➡ 6 ≤ x ≤ 10
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