[tex]\large\text{Hey there!}[/tex]
[tex]\large\boxed{\mathsf{\dfrac{3x}{y}}}\\\\\\\large\boxed{= \mathsf{\dfrac{3(\bold{4})}{\bf 12}}}\\\\\\\large\boxed{\mathsf{= \dfrac{\bold{12}}{12}}}\\\\\\\large\boxed{\mathsf{= 12\div12}}\\\\\\\large\boxed{\mathsf{= \bf 1}}\\\\\\\large\text{Therefore, your answer is: \huge\boxed{\mathsf{1}}}\huge\checkmark[/tex]
[tex]\large\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]