Answer:
39
Explanation:
3x + 12 = 6x - 15
6x - 3x = 12 + 15
3x = 27
x = 9
KJ = KH = KG = 3x + 12
KG = 3.(9) + 12
KG = 27 + 12
KG = 39
I hope I helped you.
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