Evaluate 7/15 and 2/5.?

2008-09-01 9:56 am

7/15 + 2/5

回答 (5)

2008-09-01 10:44 am

✔ 最佳答案

7/15 + 6/15 = 13/15

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2008-09-01 10:42 am

15 x 5 = 75
35/75 + 30/75 = 65/75
(65/75) / 5 = 13/15

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2008-09-01 10:34 am

7/15 + 2/5 = 7/15 + 6/15 = 13/15

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2008-09-01 10:17 am

15 = 3 x 5
5 = 5
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The LCM of 15 , 5 is:
3 x 5
= 15

7/15 + 2/5
= 7/15 + (2 x 3)/(5 x 3)
= 7/15 + 6/15
= 13/15

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2008-09-01 9:59 am

7/15 + 2/5
= 7/15 + 6/15
= 13/15

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