Answer:
w = 13, 11, 12
Explanation:
3 (15 - w)
3 (15 - 13)
3 (2)
w = 6
___
3 (15 - x)
3 (15 - 11)
3 (4)
w = 12
3 (15 - 12)
3 (3)
w = 9
(hope this helps!)
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