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(16 . 5,5) + (x . 7) = 6 (16 + x)
88 + 7x = 96 + 6x
7x - 6x = 96 - 88
x = 8
Maka banyak orang bernilai 7 yang harus ditambahkan adalah sejumlah 8.
(16 . 5,5) + (x . 7) = 6 (16 + x)
88 + 7x = 96 + 6x
7x - 6x = 96 - 88
x = 8