Question

Sendo a // b // c , determine o valor de x e y:

Answer 1

Resposta:

Explicação passo-a-passo:

$\frac{21}{y} =\frac{7}{3} \\7y = 63\\y = \frac{63}{7} \\y = 9$

$\frac{x}{y} =\frac{4}{3} \\\\\frac{x}{9} =\frac{4}{3} \\3x = 36\\x = \frac{36}{3} \\x = 12$