Answer
$x=13$
Work Step by Step
Using the properties of equality, the value of the variable that satisfies the given equation, $
2x-5=21
,$ is
\begin{array}{l}\require{cancel}
2x=21+5
\\\\
2x=26
\\\\
x=\dfrac{26}{2}
\\\\
x=13
.\end{array}
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