Verify that $x = 2$ is a solution of the linear equation $2 x + 7 = 13 - x .$

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Solution

Substitute $2$ for $x$ in the left side of the given equation,
$\begin{matrix} L H S & = 2 x + 7 = 2 (2) + 7 = 11 \end{matrix}$

Substitute $2$ for $x$ in the right side of the given equation,
$\begin{matrix} R H S & = 13 - 2 = 11 \end{matrix}$

Since, $L H S = R H S$
Hence, $2$ is the solution of the given linear equation.

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