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Mathematics 20 Online
OpenStudy (anonymous):

MATH HELP PLEASE!!! I AM GIVING MEDALS!!!! Cara rode her bicycle 3 1/4 miles to the library and then 2 5/8 miles to the park. How many miles did she ride in all? a.) Write an expression that models the problem. b.) What is the LCD of the fractions in your expression? c.) Evaluate the expression. Show all your work.

OpenStudy (anonymous):

Can you help????

OpenStudy (anonymous):

First, turn the mixed numbers into improper fractions. Do you know how to do that?

OpenStudy (anonymous):

@mangorox Kinda

OpenStudy (anonymous):

Ok, try and turn them into improper fractions. If you need help, I'm here. After that, I will work you through the rest of the problem :-)

OpenStudy (anonymous):

Thank you all

OpenStudy (anonymous):

@arthur_ser You are not supposed to give the answer to the problem! That is against the Open Study CoC.

OpenStudy (anonymous):

Lila, he is wrong. You are supposed to turn the mixed numbers into improper fractions, then add them, then turn the sum of the improper fractions back to a mixed number.

OpenStudy (anonymous):

OH ok...

OpenStudy (anonymous):

Sorry...but I just though you should know...

OpenStudy (anonymous):

Thanks a lot!! :)

OpenStudy (anonymous):

So the mixed numbers are 3 1/4 and 2 5/8

OpenStudy (anonymous):

mangorox I have the improper fractions.

OpenStudy (arthur_ser):

Oh, apologize, I didn't know it was against the rules. By the way, the answer to problem a its should have been 47/8; you find the LCD, divide every denominator of each fraction with the LCD, and then multiply both the nominator and the denominator of each fraction respectively with the quotient |dw:1386286670947:dw|

OpenStudy (anonymous):

So your anwser is right?

OpenStudy (arthur_ser):

It should have been 47/8 ,not 37/8

OpenStudy (anonymous):

Ok walk me thourgh it again plz

OpenStudy (arthur_ser):

I will try to post you a drawing with all the steps...

OpenStudy (anonymous):

Ok thank you so much

OpenStudy (anonymous):

You don't know how much I apperciate it!

OpenStudy (arthur_ser):

OpenStudy (arthur_ser):

You can also turn that back into a mixed number.

OpenStudy (arthur_ser):

Also, in terms of fractions, the LCD(Least Common Denominator) of the fractions = the LCM(Least Common Multiple) of the denomenators of the fractions.

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