Respuesta:
1.
[tex] \\ \frac{4}{5} = \frac{20}{x} \\ \\ 4(x) = 20(5) \\ 4x = 100 \\ x = \frac{100}{4} \\ x = 25[/tex]
2. [tex] \\ \frac{15}{x} = \frac{5}{2} \\ \\ 15(2) = 5(x) \\ 30 = 5x \\ \frac{30}{5} = x \\ 6 = x[/tex]
3. [tex] \\ \\ \frac{x}{10} = \frac{9}{45} \\ \\ 45(x) = 9(10) \\ 45x = 90 \\ x = \frac{90}{45} \\ x = 2[/tex]
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Respuesta:
1.
[tex] \\ \frac{4}{5} = \frac{20}{x} \\ \\ 4(x) = 20(5) \\ 4x = 100 \\ x = \frac{100}{4} \\ x = 25[/tex]
2. [tex] \\ \frac{15}{x} = \frac{5}{2} \\ \\ 15(2) = 5(x) \\ 30 = 5x \\ \frac{30}{5} = x \\ 6 = x[/tex]
3. [tex] \\ \\ \frac{x}{10} = \frac{9}{45} \\ \\ 45(x) = 9(10) \\ 45x = 90 \\ x = \frac{90}{45} \\ x = 2[/tex]