math help: I am in need of help! - Help.com

Simplify.

What can 3/15 be reduced to?

3/15 * 5/18 * 6/7

First we reduce what we can…

1/5 * 5/18 * 6/7

Then we multiply…

1/5 * 5/18 = 1/18

1/18 * 6/7 = 6/126 = 1/21

Hope this helps! Reply with any questions. :-)

Lol, I was going to do it step-by-step, but that works, too! :P

Haha, yes, thank you for waiting until I did it; I had the time of my life typing it out.

Almost as fun as a theme park, I tell ya. They really should charge admission for the Help.com Late Nite crowd.

Helps a lot more if you listen to the teacher, though. Just some advice for the future, K?

You know, you’re welcome to register your account and stick around. This site is good for all problems, not just fractions. :)
I’ve been here for over two years, it’s actually a lot of fun.

musicalpeac wrote:
how did u get 1/5*5/18?

Okay, so when you have

1/5 * 5/18 * 6/7

you want to multiply two term at a time. Essentially you do:

(1/5 * 5/18) * 6/7

which is

1/5 * 5/18

followed by multiplying by 6/7.

As you can see this breaks the problem up into two term sets which can be easily multiplied together. Reply back if you still need help. :-)

Can you rephrase the question haha?

No, 1/5 * 5/18 = 5/90 = 1/18

6/7 is simply the final fraction which you have to multiply that 1/18 by. Does that make sense? :-)

No problem!