Jawaban:
4/5
caranya :
membagi 12 dan 15 dengan angka yang sama dan habis bila dibagikan.
jadi 12 habis dibagi 3
dan 15 juga habis dibagi 3
jadi
[tex] \frac{12 \: \div \: 3 }{15 \: \div \: 3} = \frac{4}{5} [/tex]
[tex] \frac{12}{15} \div 3 \\ \\ = \frac{4}{5} [/tex]
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