Question

o numero somado com o seu dobro é igual a 135. qual é esse numero?

Answer 1

Resposta:

$x + 2x = 135 \\ 3x = 135 \\ x = \frac{135}{3} \\ x = 45 \\ \\ 45 + 90(45 \times 2) = 135$

Answer 2

$\Large\displaystyle\begin{gathered} \sf{x+2x=135 } \end{gathered}$

$\Large\displaystyle\begin{gathered} \sf{3x=135 } \end{gathered}$

$\Large\displaystyle\text{ \begin{gathered} \sf{x=\frac{135}{3} } \end{gathered} }$

$\Large\displaystyle\text{ \begin{gathered} \boxed{\boxed{\sf{ x=45}}} \end{gathered} }$