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Mathematics 7 Online
OpenStudy (jravenv):

Help me, Best answer rewarded, screencap in comments.

OpenStudy (jravenv):

OpenStudy (anonymous):

the first one hy

OpenStudy (anonymous):

\[\frac{ 6m-5 }{ 30 }*\frac{ 3 }{ 1 } \]

OpenStudy (mathstudent55):

You have three small denominators. First, find their LCD. What is the LCD of 5, 6, and 3?

OpenStudy (anonymous):

so you start by finding a common denominator for the numerator part of the fraction. Everything will be over the denominator 1/3

OpenStudy (jravenv):

30

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

so i solved the top part first (numerator). I did not touch the denominator 1/3 at all. after I have found \[\frac{ 6m-5 }{ 30 }\] I proceeded to use the fraction rules: If you are dividing by a fraction, (1/3) YOU INVERT THE DENOMINATOR, hence , 1/3 becomes 3/1, so I had \[\frac{ \frac{ 6m-5 }{ 30} }{ \frac{ 1 }{ 3 } }\]

OpenStudy (anonymous):

which I changed to my first answer above

OpenStudy (mathstudent55):

@MERTICH has a great answer. Here is another way of solving it. Find the LCD of the three small denominators. It is 30. Multiply the numerator and denominator of the large fraction by the LCD, 30 |dw:1434144517659:dw|

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