## Algebra 1

Published by Prentice Hall

# Chapter 1 - Foundations for Algebra - 1-8 An Introduction to Equations - Practice and Problem-Solving Exercises - Page 57: 58

y=-5

#### Work Step by Step

Use mental math. What number added to 4 yields 9? $4+5=9$ Since y is negated in the equation, $y=-5$.

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