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find the LCM and GCM with solution pls
1.lcm and gcm of 14 and 35
2.lcm and gcm of 8 and 20
3.lcm and gcm of 5 and 13
4.lcm and gcm of 9 and 15
5.LCM and gcm of 4,6 and 12

WITH SOLUTION PLS​​