Respuesta :

75
[tex] \frac{42}{50} = \frac{105}{x} [/tex]
[tex]42 \times = 105 \times 50[/tex]
[tex]42 x = 5250[/tex]
[tex] \frac{42x}{42} = \frac{5250}{42} [/tex]
[tex]x = 75[/tex]

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