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4/7 - 2/5 = 6/35.

To subtract (or add) fractions make both fractions equivalent fractions with the same denominator. The LCM (Lowest Common Multiple) of 7 and 5 is 35, so convert both the fractions to equivalent fractions out of 35:

4/7 = 20/35

2/5 = 14/35

The subtraction can now be done:

4/7 - 2/5 = 20/35 - 14/35 = 6/35

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Q: What is 4 over 7 subtract 2 over 5?

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4/5 - 2/10 = 4/5 - 1/5 = 3/5

(5p - 4q)/pq

1/4

5 over 8 or 5/8. To add or subtract fractions you must reach the lowest common denominator, which in this case is 8. So we multiply both the top and bottom of 1/4 by to to get the bottom to equal 8. We end up with 2/8. Then we just subtract the top numbers 7-2=5. so we end up with 5/8.

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(7/8)-(5/8) =2/8 =1/4 or .25

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4/5 - 2/10 = 4/5 - 1/5 = 3/5

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3/2/5

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