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anygoal [31]
3 years ago
14

Zoe Had A Board 5 And 1/4 Feet Long. She Cut Off A Piece. Now The Board Is 3 And 5/6 Feet Long. How Long Was The Piece She Cut O

ff?
Mathematics
1 answer:
Sergio039 [100]3 years ago
5 0
Well first you need to find the LCM (least common multiple) of 4 and 6 (the denominators) so that you can subtract them from each other.

4: 4,8,12,16,20
6: 6, 12, 18, 24
The LCM is 12.

Now we can subtract the two mixed numbers by turning them into improper fractions.

5 3/12 -> 27/12
3 10/12 -> 42/12

42-27=15

The fraction is 15/12, which simplifies into 1 1/4.

She cut off 1 1/4 feet of the board. 
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