Answer
$4x=25-x$
Work Step by Step
$\left[\begin{array}{cccc}
\text{Four times } & \text{ is equal to } & \text{25 decreased } & \\
\text{a number}&&\text{by the number}\\
\downarrow & \downarrow & \downarrow & \\
4x & = & 25-x &
\end{array}\right]$
