Question

X+2=8-2x

a. -10
b.2
c. 10/3
d.-6​

Answer 1

$\large\begin{array}{l}\underbrace{\sf Veja:}\end{array}$

$\large\begin{array}{l}\sf x+2=8-2x \end{array}$

• reorganize os termos passando incógnitas de um lado e números de outro, invertendo os sinais

$\large\begin{array}{l}\sf x+2x=8-2 \end{array}$

$\large\begin{array}{l}\sf 3x=6\end{array}$

• três passa pro outro lado dividindo

$\large\begin{array}{l}\sf x=\dfrac{6}{3}\end{array}$

$\large\begin{array}{l}\boxed{\sf x=2} \end{array}$

Resposta: Letra B