math
posted by bob .
Tom is making meatloaf with 3/4 pound of turkey and 5/6 pound of ground beef. What is the LCM he should use to find the total number of pounds of meat? How many pounds of meat will be in the meat loaf? Show your work Completely.

12

Ms. Sue can you tell me how you got that answer please.

Multiples of 6:
6, 12, 18, 24
Multiples of 4:
4, 8, 12, 16, 20 
thanks mrs. sue. I understand now how I should get the lcm but how do I figure out how many pounds of meat will be in the meat loaf? when I multiply do I work the problem like this....
3/4 *5/6
=9/12*10/12
=90/12
=7 6/12
=7 1/2
is this correct? 
Why do you just use the denominators?

12 6x4=24 divided by 2=12
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