So you have to make them fractions with common denominators. Obviously they aren't yet. So, what number can bboth 16 and 2 go into? 16.
9/16 can stay as is, but we need to multiply 1/2 until we get ?/16.
2*8=16
Since we now have 16 on the bottom, we need to multiply the top by 8 too.
1*8=8
So your final fraction is 8/16.
But we aren't done yet. You still need to add the fractions to gether.
9/16 + 8/16 = 17/16 --> This can be simplified further down to 1 1/16.
I hope this helps!