Jawabanmu

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2014-01-29T19:07:15+07:00
2y - 7   ≤ 3
    2
2y-7≤3.2
2y-7≤6
2y≤13
y≤6.5
1 5 1
2014-01-29T19:07:16+07:00
2y-7≤6
2y≤6+7
2y≤13
 jadi y≤6,5