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2x + 3 ≤ 11 ....kedua ruas dikurangi 3
2x + 3 - 3 ≤ 11 - 3
2x ≤ 8...kedu ruas dikali
x ≤ 4
Hp = { x I x ≤ 4 , x ∈ B}
nilai bilangan itu kurang dari sama dengan 4 ...ok?