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x = 4 cm
4x = 16 C
3x = 12
56 = 2(7y)
56 = 14y
56 : 14 = y
4 = y
sisi dg nilai perbandingan 3
3y = 3 x 4 = 12 cm
sisi dg nilai perbadingan 4
4y = 4 x 4 = 16 cm===> C