Answer :

mumsy
12/15 divide both by 3=4/5
48/56  divide both by 8  =6/7
28/36    divide by 4  = 7/9

15/40 divide by 5 = 3/8
First, Think: Which number could divided evenly between 12 and 15. Answer: 3. 12 goes into 3 four times and 15 goed into 3 five times. So, 12/15 simplified is 4/5. For #2 both 48 and 56 go into 4. Simplify that and you get 12/14. You can simplify again. Both 12 and 14 go into 2. You will get 6/7 cuz 12 goes into 2 six times and 14 goes into 2 seven times. I think you get the idea, you should be able to do the rest on your own. If you have any questions just comment bel9w :) HP this hlps