Question

já lançei jony e essa daqui​

Answer 1

Explicação passo-a-passo:

a)

$\frac{5}{2} = \frac{x}{4} \\ 2x = 20 \\ x = \frac{20}{2} \\ x = 10$

$\frac{5}{10} = \frac{y}{4} \\ 10y = 20 \\ y = \frac{20}{10} \\ y = 2$

b)

$\frac{6}{y} = \frac{8}{4} \\ 8y = 4 \times 6 \\ 8y = 24 \\ y = \frac{24}{8} \\ y = 3$

$\frac{8}{12 } = \frac{x}{y} \\ \frac{8}{12} = \frac{x}{3} \\ 12x = 3 \times 8 \\ 12x = 24 \\ x = \frac{24}{12} \\ x = 2$