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48 : 3/5 = n x 20
48 x 5/3 = 20n
16 x 5 = 20n
20n = 80
n = 80 : 20
n = 4
Maka, titik diatas diisi dengan bilangan 4
80 = .... x 20
.... = 80/20 = 4
Gitu??
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