Beginning Algebra
Answer/Discussion to Practice
Problems
on Addition Property of Equality
 Answer/Discussion
to 1a
|
 |
*Inverse of sub. 1/5 is add. 1/5 |
| If you put 4/5 back in for x in the original
problem you will see that 4/5 is the solution to our problem. |
| Answer/Discussion
to 1b
|
 |
*Inverse of add 7 is sub. 7 |
| If you put -9 back in for b in the original
problem you will see that -9 is the solution to our problem. |
| Answer/Discussion
to 1c
|
 |
*Inverse of sub. .5x
is add .5x
*Inverse of sub. 7.1 is add 7.1
|
| If you put 5.9 back in for x in the original
problem you will see that 5.9 is the solution to our problem. |
| Answer/Discussion
to 1d
Using the distributive property and then combining like terms to simplify
the left side of the equation we get: |
 |
*Inverse of add x
is sub. x
*Inverse of add 13 is sub. 13
|
| If you put -15 back in for x in the original problem you will see that
-15 is the solution to our problem. |
| Answer/Discussion
to 2a
Two numbers have a sum of 200. If one number is x,
express the other number in terms of x. |
| Since our total is 200 and we are letting x represent one number, the
other number would be expressed as the total minus x
or 200 - x.
So, 200 - x is our answer. |
All contents copyright (C) 2001 - 2008, WTAMU and Kim Seward. All rights reserved.
Last revised on Jan. 9, 2002 by Kim Seward. |
