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anonymous
 5 years ago
I need help to find the lcm of 12, 28, it is taking to long and i never get the right answer!
anonymous
 5 years ago
I need help to find the lcm of 12, 28, it is taking to long and i never get the right answer!

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Becca 12 written as prime numbers is 2 * 2 * 3 do you understand this?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0How about this... 12 is 4 * 3 28 is 4 * 7

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The LCM of 12 and 28 is 84.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0OK.. they both have a 4 so you only use it once. You multiply all the things they have in common (4) times all the things they don't have in common (3 and 7) SO... 4 * 3 * 7 = 84

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Mhmm........... Why would you multiply 3 and 7 even though they dont have them in common? I am so difficult :( I don't understand anything....

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You are ok... it is just the way you find the lcm. Do you have another one, I will help you.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What is the 90* 12 = 3 * 4 19 = 1 * 19 so it is just 1 * 3 * 4 * 19 nothing in common which means it is actually 12*19

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I meant 90 not 19 lol

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I wasnt looking when i was typing

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0OK 12 = 2 * 2 * 3 (4 times 3) 90 = 2 * 5 * 9 (2 times 45 and 45 is 5 times 9) Do you get this?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yea I understand a llittle...... Im struggling in math so I hope i'm not bothering.....

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0OR 12 = 2 * 6 12 = 2 * 2 * 3 (I replaced the 6 with 2 * 3) 90 = 2 * 45 90 = 2 * 5 * 9 (I replaced the 45 with 5 * 9) 90 = 2 * 5 * 3 * 3 (I replaced the 9 with 3 * 3) This is how it should look.. I forgot to break down the 9 in my last post

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh now get it better!

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.012 = 2 * 2 * 3 90 = 2 * 5 * 3 * 3 What do they both have....... answer (2 and a 3) So you multiply 2 * 3 (what they have in common) and then everything else 2 * 3 (common) * 2 * 5 * 3 (not common) 180

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.028x3=84 42x2=84. Your LCM is 84!
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