## Jravenv one year ago Help me, Best answer rewarded, screencap in comments.

1. Jravenv

2. anonymous

the first one hy

3. anonymous

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

4. mathstudent55

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

5. anonymous

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

6. Jravenv

30

7. anonymous

yes

8. 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 $\frac{ \frac{ 6m-5 }{ 30} }{ \frac{ 1 }{ 3 } }$

9. anonymous

which I changed to my first answer above

10. 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|

11. mathstudent55

Now simplify the fraction. |dw:1434144580720:dw| Obviously, we get the same answer.

12. Jravenv

I get it, thank you all!