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-2a=-14
a = 7
2. 4a > 7+5
4a > 12
a > 3
3. -4a < 15-9
-4a < 6
a > 6/4 (tanda berbalik karena koefisien a negatif)
a> 3/2
4. -a-5a = -5 - 13
-6a = -18
a = 3
tandai jadi yg terbaik ya