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Mathematics 21 Online
OpenStudy (anonymous):

Multiplication of fractions. Check comments.

OpenStudy (anonymous):

\[2 \frac{ 1 }{ 2 } + 3 \frac{ 1 }{ 7 } \]

OpenStudy (anonymous):

When improper, they are: 5/2 + 22/7

OpenStudy (texaschic101):

correct...but they cannot be added until they have a common denominator

OpenStudy (anonymous):

14 is the LCD... so 45/14 44/14?

OpenStudy (anonymous):

There may be a mistake, I did that completely mentally.

OpenStudy (texaschic101):

5/2 + 22/7 --- 14 is your LCD 35/14 + 44/14 now just add the numerators...denominators do not change

OpenStudy (anonymous):

79/14

OpenStudy (texaschic101):

correct....unless you need it in mixed number form

OpenStudy (anonymous):

I do, 5.64 shall do.

OpenStudy (texaschic101):

thats decimal form....mixed number form would be 5 9/14 (thats 5 and 9/14)

OpenStudy (anonymous):

\[2 \frac{ 1 }{ 2 } \div 3 \frac{ 1 }{ 7 }\]

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