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<=> 3 - 6x + 6x > 13 - x + 6x
<=> 3 > 13 - 5x
<=> 3 + 5x > 13 - 5x + 5x
<=> 3 + 5x > 13
<=> 3 - 3 + 5x > 13 - 3
<=> 5x > 10
<=> x > 2
himpunan penyelesaian x : {x | x > 2, x £ bil. bulat }