Question

Help me pls!!

Find a common denominator for each pair of fractions.
1.(done)

2. 4/5 and 2/3
3. 3/4 and 5/6
4. 7/8 and 3/10

5.(done)

6. 1/9 and 1/2
7. 2/3 and 1/8
8. 7/20 and 4/15
9. 2/5 and 3/4
10. 5/8 and 4/9
11. 1/4 and 4/7
12. 5/12 and 7/9
13. 7/15 and 1/3
14. 1/2 and 2/3
15. 2/9 and 4/5
16. 7/8 and 5/6
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Answer 1

2) 15 3) 12 4) 40 6) 18 7) 24 8) 60 9) 20 10) 72 11) 28 12) 36 13) 15 14) 6 15) 45 16) 24

Explanation:

2) 5 and 3 can both go into 15. 4/5 = 12/15 2/3 = 10/15

3) 4 and 6 can both go into 12. 3/4 = 9/12 5/6 = 10/12

4) 8 and 10 can both go into 40. 7/8 = 35/40 3/10 = 12/40

6) 9 and 2 can both go into 18. 1/9 = 2/18 1/2 = 9/18

7) 3 and 8 can both go into 24. 2/3 = 16/24 1/8 = 3/24

8) 20 and 15 can both go into 60. 7/20 = 21/60 4/15 = 16/60

9) 5 and 4 can both go into 20. 2/5 = 8/20 3/4 = 15/20

10) 8 and 9 can both go into 72. 5/8 = 45/72 4/9 = 32/72

11) 4 and 7 can both go into 28. 1/4 = 7/28 4/7 = 16/28

12) 12 and 9 can both go into 36. 5/12 = 15/36 7/9 = 28/36

13) 15 and 3 can both go into 15. 7/15 = 7/15 1/3 = 5/15

14) 2 and 3 can both go into 6. 1/2 = 3/6 2/3 = 4/6

15) 9 and 5 can both go into 45. 2/9 = 10/45 4/5 = 36/45

16) 8 and 6 can both go into 24. 7/8 = 21/24 5/6 = 20/24