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5b = 4d
(d- 2) - (b-2) = 4.....
d - 2 - b + 2 =4...
d- b = 4.....d = 4 + b
5b = 4(4 + b)
5b = 16 + 4b
b = 16
d= 20
dita 8 tahun akan datang = 20 + 8 = 28
perbandingan dita = 28 : 20 = 7 : 5