Answer
an identity
Work Step by Step
Using the properties of equality, the solution to the given equation, $
3(x+5)=3(5+x)
$, is
\begin{array}{l}
3x+15=15+3x
\\\\
3x-3x=15-15
\\\\
0=0
\text{ (TRUE)}
.\end{array}
Since the solution above ended with a TRUE statement, then the given equation is $\text{
an identity
.}$
