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Kipish [7]
3 years ago
5

Eric needs 1/2 deck of playing cards for a magic trick. He only has 2/7 of a deck. What fraction of a deck does Eric still need?

Mathematics
1 answer:
tatyana61 [14]3 years ago
4 0

Answer: Eric still needs \frac{3}{14} of a deck.

Step-by-step explanation:

You know that:

- Eric need 1/2 deck of playing cards.

- Eric has 2/7 of a deck.

Therefore, to find the fraction of a deck that Eric still needs, you must subtract 1/2 and 2/7:

- Find the least common multiple of the denominators:

2=2*1\\7=7*1

LCM=2*7*1=14

- Now, you can make the subtraction:

\frac{(7*1)-(2*2)}{14}=\frac{7-4}{14}=\frac{3}{14}

Therefore, he still needs \frac{3}{14} of a deck.

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