You have to solve the given expression for x. To do so, you have to isolate the x-term on one side of the equal sign.
![15-4x=3](https://img.qammunity.org/2023/formulas/mathematics/college/m2uxewztu137phaqtkrhe83h8y0fvp24hm.png)
- First, subtract 15 to both sides of the equation to pass the term to the right side of the equal sign:
![\begin{gathered} 15-15-4x=3-15 \\ -4x=-12 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/165d9drwqjszuw0d3did20f5526tviitie.png)
-Second, divide both sides by -4 to cancel the multiplication on the x-term and determine the value of x:
![\begin{gathered} (-4x)/(-4)=(-12)/(-4) \\ x=3 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/f8a3ogg3zz2ru3dya4wgu0z5whsmhgwzdo.png)