(b) \( 12 x=3 \)

To solve the equation \( 12x = 3 \), you simply divide both sides by 12. This gives you \( x = \frac{3}{12} \), which simplifies down to \( x = \frac{1}{4} \). Easy as pie, right? This equation shows a direct proportion between \( x \) and the constant on the right side. Such equations frequently appear in everyday situations, like calculating time, distance, or even financial budgets – they help us figure out how changing one variable impacts another.