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Math problem

Posted by on Oct. 1, 2013 at 1:08 PM
• 12 Replies

6/17*10/12=5/17

My question is how do you get the answer 5/17?

by on Oct. 1, 2013 at 1:08 PM
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Replies (1-10):
by on Oct. 1, 2013 at 1:31 PM

10/12 reduced is 5/6 and the 6's cancel each other out making the answer 5/17.

by Gold Member on Oct. 1, 2013 at 1:37 PM

no matter how I do it......I get 15/51.  I think your answer is wrong....from wherever you are getting it.

by Gold Member on Oct. 1, 2013 at 1:39 PM

I see how you got that, but I don't remember crossing out...in the multiplication aspect.  I could be wrong because it has been several years since I have done this and we are only in the adding phase of fractions.

Quoting Knightquester:

10/12 reduced is 5/6 and the 6's cancel each other out making the answer 5/17.

by on Oct. 1, 2013 at 1:41 PM
1 mom liked this
6 and the 12 reduce to 1 and 2

1/17 times 10/2

10 times 1= 10
17 times 2 =34

Reduce down and you get 5/17
by on Oct. 1, 2013 at 1:41 PM

You do cross cancel.

6/17 x 10/12

recude the 10/12 to 5/6

then cross cancel the 6 from the 6/17 and the 6 from the 5/6 and your answer is 5/17.

Quoting coala:

I see how you got that, but I don't remember crossing out...in the multiplication aspect.  I could be wrong because it has been several years since I have done this and we are only in the adding phase of fractions.

Quoting Knightquester:

10/12 reduced is 5/6 and the 6's cancel each other out making the answer 5/17.

by on Oct. 1, 2013 at 1:43 PM
That's what we were getting. It wasn't an option. It's a multiple choice question. 5/17 however is an option.

Quoting coala:

no matter how I do it......I get 15/51.  I think your answer is wrong....from wherever you are getting it.

by Gold Member on Oct. 1, 2013 at 1:43 PM

Thanks!!!  I am going to have to stick that at the back of my brain for when we start this area in math.....the last math course I took was in college and it has been several years.

Quoting Knightquester:

You do cross cancel.

6/17 x 10/12

recude the 10/12 to 5/6

then cross cancel the 6 from the 6/17 and the 6 from the 5/6 and your answer is 5/17.

Quoting coala:

I see how you got that, but I don't remember crossing out...in the multiplication aspect.  I could be wrong because it has been several years since I have done this and we are only in the adding phase of fractions.

Quoting Knightquester:

10/12 reduced is 5/6 and the 6's cancel each other out making the answer 5/17.

by on Oct. 1, 2013 at 1:44 PM
by on Oct. 1, 2013 at 3:22 PM
2 moms liked this

Even if you do it the long way and multiply straight across, you get 60/204... if you divide them both by 12 (to reduce) you get 5/17.

If you are coming up with something different, maybe there is an error in your calculations.

by on Oct. 1, 2013 at 3:53 PM

We weren't reducing by 12.

Quoting KrissyKC:

Even if you do it the long way and multiply straight across, you get 60/204... if you divide them both by 12 (to reduce) you get 5/17.

If you are coming up with something different, maybe there is an error in your calculations.