Question

2× + 1 = 7
Alguém me ajuda??

Answer 1

2x3=6+1=7 era so ver qual multiplo dava o antecessor do 7

Answer 2

$\Large\displaystyle\begin{gathered} \sf{ 2x+1=7} \end{gathered}$

$\Large\displaystyle\begin{gathered} \sf{ 2x=7-1} \end{gathered}$

$\Large\displaystyle\begin{gathered} \sf{2x=6 } \end{gathered}$

$\Large\displaystyle\text{ \begin{gathered} \sf{ x=\frac{6}{2}} \end{gathered} }$

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