Evaluate the expression

Hey there! I'm happy to help!
First let's plug y into the first fraction.
[tex]\frac{12-3(3)}{2} =\frac{12-9}{2}=\frac{3}{2}[/tex]
Now we do the second fraction.
[tex]\frac{2(3)-4}{3}=\frac{6-4}{3}=\frac{2}{3}[/tex]
We also need to multiply the second fraction by 3 as it is multiplied by y.
[tex]3(\frac{2}{3})=2[/tex]
Now we add 2 and 3/2, giving us 7/2.
Have a wonderful day! :D