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= (3ab²/5cd) × (ab²/2cd²)
= (3ab² × ab²) / (5cd × cd²)
= 3a²b⁴ / 5c²d³
2) sigit = (⅓ × uang sony) + 10.000
= (⅓ × 90.000) + 10.000
= 30.000 + 10.000
= 40.000
3) misal hrg 1 kg gula = a
1 kg telur = b
2a + b + 2.000 = 20.000
2a + b = 20.000 - 2.000
2a + b = 18.000
(2 × ½b) + b = 18.000
b + b = 18.000
2b = 18.000
b = 9.000
a = ½ × b
a = ½ × 9.000
a = 4.500
jadi harga 1 kg gula = 4.500
1 kg telor = 9.000