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⇒ 3 ≤ -y atau
⇒y ≤ -3
Hp { yl y ≤ -3. y ∈ bil, bulat}
9. 6 ≤ 9 - y
-3 ≤ -y atau
⇒y ≤ 3
Hp = { yl y ≤ 3, y ∈ bil. bulat}