SOLUTION: how do I subtract this fraction? 5/8-2/5

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Question 6486: how do I subtract this fraction? 5/8-2/5
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
convert the fractions to the same denominator....

For 8 and 5, convert them both to 40, as 25/40 - 16/40. All i did was scale up each fraction. Now we can subtract --> 9/40. This does not simplify further.

jon.