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March 29, 2015

Posted by **Ms. Sue** on Thursday, September 27, 2007 at 8:21pm.

Please explain these problems

5-x-x=-1

a/2+1/5=17

3.5=12x-5x

a-4a=2a+1-5a

- Algebra repost for Suzia -
**Ms. Sue**, Thursday, September 27, 2007 at 8:31pmLet's look at the first problem.

5 - x - x = -1

It means that you're subtracting a number twice from 5 and getting -1.

What number times 2 can be subtracted from 5 to get -1?

How about 3?

5 - 3 = 2

2 - 3 = -1

Or you can do it algebraically:

5-x-x = -1

6 = 2x

3 = x

If you post the answers to the other problems, we'll be glad to check them for you.

- Algebra repost for Suzia -
**Anonymous**, Sunday, October 12, 2008 at 2:36pma-4a=2a+1-5a

- Algebra repost for Suzia -
**Anonymous**, Sunday, October 12, 2008 at 2:36pmlil wayne

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