Question

Calcule o valor dos termos desconhecidos:
$1) \frac{30}{x} = \frac{1}{4}$
$2) \frac{45}{x} = \frac{5}{3}$
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Answer 1

$\boxed{\begin{array}{l}\rm Calcule~o~valor~dos~termos~desconhecidos:\\\tt 1)~\rm\dfrac{30}{x}=\dfrac{1}{4}\\\\\tt 2)~\rm\dfrac{45}{x}=\dfrac{5}{3}\\\underline{\rm soluc_{\!\!,}\tilde ao:}\\\\\tt 1)~\sf\dfrac{30}{x}=\dfrac{1}{4}\\\sf x=30\cdot4\\\sf x=120\\\\\tt 2)~\sf\dfrac{45}{x}=\dfrac{5}{3}\\\\\sf 5x=3\cdot 45\\\sf 5x=135\\\\\sf x=\dfrac{135}{5}\\\\\sf x=27\end{array}}$