I've tried to show that here step-by-step, but no method I've tried looks right on the screen, so here's the answer. Sorry.
9/16
OK I think I got a way....
Three times one fourth is 3/4.
One times 3 sixteenths is 3/16.
Find a common denominator: 16
For 3/4, multiply both the numerator and denominator by 4, which gives you 12/16.
Then, you have 12/16 minus 3/16, which yields 9/16.
Boo Yah.
Is that clear?