# Message from Deleted User in MacGuyver - Skills &amp; Academics#homework-help

2018-01-30 04:42:13 UTC

When I multiply I get 54/1296 and i don't know how to reduce it because I'm bad at fractions

2018-01-30 04:44:07 UTC

Simplify 6/9 * 9/144

2018-01-30 04:44:19 UTC

The 9s cancel out

2018-01-30 04:44:33 UTC

54/54 = 1 and 1296/54 = 24

2018-01-30 04:44:39 UTC

And 6 goes into 144 24 times

2018-01-30 04:45:07 UTC

So cancelled out the 9s and divide 6/144 ?

2018-01-30 04:45:12 UTC

Is that mastering physics but for math

2018-01-30 04:45:16 UTC

Yes

2018-01-30 04:45:36 UTC

Or what @micbwilli said

2018-01-30 04:45:42 UTC

Either works

2018-01-30 04:45:57 UTC

Okay thanks @GetOffMyState#8267

2018-01-30 04:46:32 UTC

@micbwilli could you explain your way a bit more? How do you know that's what your supposed to do?

2018-01-30 04:48:52 UTC

2018-01-30 04:49:16 UTC

Both rely on what I did above with another example

2018-01-30 04:51:18 UTC

For your example think about how 6/9 * 9/144 = 9/9 * 6/144

2018-01-30 04:51:42 UTC

The 9/9 is 1 and can therefore be ignored

2018-01-30 04:51:50 UTC

If you are trying to reduce a fraction start with a common number and just work down.

So like with 54/1296, both are multiples or 9. I knew 54 was and I checked 1296. That's 6/144. I see if 6 can be used to divide 144, and since it can it becomes 1/24.

2018-01-30 04:52:46 UTC

6/144 = 6 /(24 * 6) = 6/6 * 1/24

2018-01-30 04:53:01 UTC

If you are unsure there to start diving top and bottom by 2 works if both numbers are even.

2018-01-30 04:53:17 UTC

^ this

2018-01-30 04:54:57 UTC
2018-01-30 04:57:50 UTC

This is so complicated lol. Okay. So just find the GCD and then reduce it down.

2018-01-30 04:58:18 UTC

Or in this case, I could just divide 6/144

2018-01-30 04:58:25 UTC

Right?

2018-01-30 04:58:29 UTC

Yes

2018-01-30 04:58:56 UTC

Because the 9s happen to cancel out

2018-01-30 04:59:06 UTC

And if it's not a problem where it can cancel out then what?

2018-01-30 05:00:10 UTC

You can find the GCD

2018-01-30 05:01:22 UTC

Okay

2018-01-30 05:02:17 UTC

Thanks. Yall

2018-01-30 05:04:21 UTC

On another note, why do we teach PEMDAS when it should be PEDMSA?

2018-01-30 05:05:21 UTC

Multiplication and division are the same really

2018-01-30 05:05:35 UTC

2018-01-30 05:05:50 UTC

So PEMDAS is easier to remember

2018-01-30 05:05:54 UTC

I've gotten answers wrong for doing multiplication first sometimes though

2018-01-30 05:06:06 UTC

And same with addition and sibtraction

2018-01-30 05:07:46 UTC

You might be breaking another rule or your teachers suck. Unless I’m forgetting something that’s wrong and you shouldn’t have been marked down

2018-01-30 05:09:13 UTC

If you are using a computer program it is probably programmed by someone diverse and doesn’t account for multiple but equally valid ways to the answer

2018-01-30 05:09:25 UTC

This class is online. The teacher just supervises. I followed PEMDAS as taught but when I did I kept getting answers wrong and when I viewed the solution they were doing division first

2018-01-30 05:09:28 UTC

Yes omg

2018-01-30 05:09:54 UTC

The worst part is that it only counts one answer correct. And if you don't get that correct it marks it wrong even if you understand the concept