Brenda did the following problem. Her teacher said it was wrong. Where did Brenda make her mistake? r +11 +8r = 29 9r + 11 = 29     +11      +11 9r = 40 r = 4.4

Algebra and Trigonometry (6th Edition)
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ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Brenda did the following problem. Her teacher said it was wrong. Where did Brenda make her mistake?

r +11 +8r = 29

9r + 11 = 29

    +11      +11

9r = 40

r = 4.4

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