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(x + 9) / (x + 2) ≤ 2²
(x + 9) / (x + 2) ≤ 4
x + 9 ≤ 4 (x + 2)
x + 9 ≤ 4x + 8
x - 4x ≤ 8 - 9
-3x ≤ -1
x ≤ -1/-3
x ≤ 1/3
Bintang 5-nyoo kalo jawaban di atas membantu :D