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16 _< 36
= 6x - 4 - 10x ≤ 32
= -4 - 4x ≤ 32
= -4 - 4x - 32 ≤ 0
= -4x -36 ≤ 0 --> dikali -1 agar positif
= 4x + 36 ≥ 0 --> faktorkan
= 4(x + 9 ) ≥ 0
x = 0 ∨ x = -9
Buat garis bilangan lalu arsir daerah positif. Himpunan penyelesainnya {x | -9 ≥ x ≥ 0}
Oya karena x ∈ R jadi HP = (0,1,2,3,...}
Semoga membantu. :)