*Inverse of sub. 7.1 is add 7.1

Using the distributive property and then combining like terms to simplify the left side of the equation we get:

*Inverse of add 13 is sub. 13

Two numbers have a sum of 200. If one number is x, express the other number in terms of x.

So, 200 - x is our answer.

Last revised on July 26, 2011 by Kim Seward. All contents copyright (C) 2001 - 2011, WTAMU and Kim Seward. All rights reserved.