Respuesta:
[tex] \frac{x}{7} + \frac{x}{3} + \frac{x}{2} = \frac{13}{21} \\ 6x + 14x + 21x = 26 \\ 41 = 26 \\ x = \frac{26}{41} [/tex]
Espero que te ayude.
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Respuesta:
[tex] \frac{x}{7} + \frac{x}{3} + \frac{x}{2} = \frac{13}{21} \\ 6x + 14x + 21x = 26 \\ 41 = 26 \\ x = \frac{26}{41} [/tex]
Espero que te ayude.