Siswa laki-laki = a
Siswa perempuan = b
(n(a) - n(b)) . a = (n(s) - n(b)) . s
(69 - 74) . a = (72 - 74) . 40
(-5) . a = (-2) . 40
a = (-80) : (-5)
a = 16 siswa putra
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Siswa laki-laki = a
Siswa perempuan = b
(n(a) - n(b)) . a = (n(s) - n(b)) . s
(69 - 74) . a = (72 - 74) . 40
(-5) . a = (-2) . 40
a = (-80) : (-5)
a = 16 siswa putra