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부등식 \( \frac{x+1}{3}>\frac{x-3}{2} \) 을 만족시키는 \( x \) 의 값 중 가장 큰 정수를 구하시오.

Ask by Gough Li. in South Korea
Mar 09,2025

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Answer

\( x < 11 \) 이므로, \( x \)의 가장 큰 정수는 \(10\)입니다.

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Bonus Knowledge

부등식 \( \frac{x+1}{3} > \frac{x-3}{2} \) 를 해결해 보겠습니다. 먼저 양 변에 6을 곱하여 부등식을 더 간단하게 만들어 줍니다: \[ 2(x+1) > 3(x-3) \] 그러면 다음과 같이 됩니다: \[ 2x + 2 > 3x - 9 \] 이제 \( x \)를 한 쪽으로 모아줍니다: \[ 2 + 9 > 3x - 2x \] \[ 11 > x \] 즉, \( x < 11 \) 이므로 \( x \)의 값 중 가장 큰 정수는 10입니다.

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