Question

o carro de João consome 1 litro de gasolina a cada 10 km percorridos para ir pro sítio que fica distante 63 km o carro consome :

Answer 1

Boa tarde 

Regra de tres simples

1       10
x       63 

10x = 63
x = 63/10 = 6.3 litros 

Answer 2

$\Large\displaystyle\text{ \begin{gathered} \sf{ \frac{1}{x}=\frac{10}{63}} \end{gathered} }$

$\Large\displaystyle\begin{gathered} \sf{ 10x=63} \end{gathered}$

$\Large\displaystyle\text{ \begin{gathered} \sf{x=\frac{63}{10} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \boxed{\boxed{\sf{ x=6{,}3}}} \leftarrow \sf litros\, de \,combust\acute{i}vel\end{gathered} }$