HELP! How can I solve this math exercise

[From: ] [author: ] [Date: 11-09-11] [Hit: ]

algebra.com/algebra/homework/Matrices-and-determiminant/Matrices-and-determiminant.faq.question.138333.html-Multiply 1/5 by 3/3 and 1/3 by 5/5 to get a common denominator of 15.......

1/5 + 1/3 = 1R

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Is your question listed correctly?

1/5 + 1/3 = 8/15 = 1R

R = 8/15
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However, if your question is
1/5 + 1/3 = 1/R
then R = 15/8

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http://www.algebra.com/algebra/homework/Matrices-and-determiminant/Matrices-and-determiminant.faq.question.138333.html

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Multiply 1/5 by 3/3 and 1/3 by 5/5 to get a common denominator of 15. So you get

3/15 + 5/15 = 1R
8/15 = 1R

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1/5 + 1/3 = 1R
1/5 + 1/3 = R
3/15 + 5/15 = 15R/15
3 + 5 = 15R
8 = 15R
8/15 = R

1

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