The value from the set that makes 4x=1 true can be gotten by making "x" the subject of the formula.
[tex]\begin{gathered} 4x=1 \\ \text{Divide both side by 4} \\ \frac{4x}{4}=\frac{1}{4} \\ x=\frac{1}{4} \end{gathered}[/tex]Therefore the value that makes the equation true is 1/4