Question

Solve the following equation: $2\left(x+4\right)=12$

Answer 1

Solve linear equations in one variable.

Step 1: Divide both sides of the equation by $2$.

$\begin{array}{rcl}2\left(x+4\right)& =& 12\\ & \Rightarrow & \frac{2\left(x+4\right)}{2}=\frac{12}{2}\\ & \Rightarrow & x+4=6\end{array}$

Step 2: Transpose $4$ to RHS of the equation.

$\begin{array}{rcl}x& =& 6-4\\ & \Rightarrow & x=2\end{array}$

Hence, the solution of the equation $2\left(x+4\right)=12$ is $x=2$.