Question

simplify

15(1 1/5)

and

24(1/3+1/8)

Answer 1

Well you would multiply 15/1 by 11/5 giving you. 165/5. Simply the fraction to 33. That's the first answer.
Next you would add 1/3 and 1/8 together giving you 11/24. Multiply 11/24 by 24/1 the resulting answer is 24.

So the two expressions simplified are 33 and 24 respectively.

Answer 2

15(11/5) = 3*5(11/5) = 3*11 = 33

and 

24(1/3 +1/8) = 24((8*1) +(3*1))/24 = 24(11/24) = 11

hope i ve understood it right and this will help you