Respuesta :

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[tex]\dfrac{a}{b}=\dfrac{8}{15}\ \ \ \ |cross\ multiply\\\\15a=8b\ \ \ \ |:15\\\\a=\dfrac{8b}{15}\ \ \ \ |:8\\\\\dfrac{a}{8}=\dfrac{b}{15}[/tex]

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Answer:

a/b =8/15

multiply both sides by b/8 and you get

a/8 = b/15