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Ani = 4/3 Ana ... (eq.1)
Ani + Ana = 21 ...(eq.2)
dari eq 1 dan eq 2
4/3 Ana + Ana = 21
7/3 Ana = 21
Ana = 9 tahun
Ani = 12 tahun
2. Kelereng Budi = 1 2/5 Dimas = 7/5 Dimas
Budi - Dimas = 12
7/5 Dimas - Dimas = 12
2/5 Dimas = 12
Dimas = 30
Budi = 42