Explicación paso a paso:
[tex] \frac{9}{x} = \frac{30}{10} \\ 9 \times 10 = 30x \\ 90 = 30x \\ x = \frac{90}{30} = 3 \\ x = 3[/tex]
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Explicación paso a paso:
[tex] \frac{9}{x} = \frac{30}{10} \\ 9 \times 10 = 30x \\ 90 = 30x \\ x = \frac{90}{30} = 3 \\ x = 3[/tex]