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Verified answer
Kelas 9 MatematikaBab Statistika
Dina = d
15 . 6,6 + 1 . d = (15 + 1) . 6,7
99 + d = 16 . 6,7
d = 107,2 - 99
d = 8,2
Jadi, nilai tes matematika Dina = 8,2