Question

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Answer 1

Resposta:

a)

$\frac{9}{3} = \frac{x}{6} \\ \\ 3x = 6 \times 9 \\ \\ 3x = 54 \\ \\ x= \frac{54}{3} \\ \\ x = 18$

$\frac{12}{y} = \frac{x}{6} \\ \\ \frac{12}{y} = \frac{18}{6} \\ \\ \frac{12}{y} = 3 \\ \\ 3y = 12 \\ \\ y = \frac{12}{3} \\ \\ y = 4$

b)

$\frac{8}{4} = \frac{12}{x} \\ \\ 8x = 4 \times 12 \\ \\ 8x = 48 \\ \\ x = \frac{48}{8} \\ \\ x = 6$

$\frac{5}{y} = \frac{x}{12} \\ \\ \frac{5}{y} = \frac{6}{12} \\ \\ 6y = 5 \times 12 \\ \\ 6y = 60 \\ \\ y = \frac{60}{6} \\ \\ y = 10$

Bons Estudos!