To Describe: The error in solving for one of the variables in the given linear systems and also to correct the error.
Answer to Problem 20E
The error is that -4 is not multiplied on both sides of the equation. The correct solution is
Explanation of Solution
Given information:
Given solution with error:
Calculation:
In the given solution the equation
The error is that -4 is not multiplied on both sides of the equation
The correct solution will be:
the equation
Now
Chapter 5 Solutions
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
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