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x + 3x 5 + 3
4x 8
x 8/4
x 2
x-3 ≤ 5-3x
x + 3x ≤ 5+3
4x ≤ 8
x ≤ 2
{ x | x ≤ 2 , x bilangan bulat }
x = { ..1, 2 ,... dst }