# Chapter 6 - Rational Expressions and Equations - 6.1 Rational Expressions - 6.1 Exercise Set - Page 380: 70

An example of how to prove this is below.

#### Work Step by Step

One way is to multiply $b-a$ by $-1$ as follows: $$-1(b-a) \\ -b-(-a) \\ -b+a \\ a-b$$ Thus, since multiplying one expression by -1 yields the other expression, the two expressions are opposites.

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