Question: Exercises 4042 will help you prepare for the material covered in the first section of the next chapter. Solve the system: What makes it fairly

Exercises 40–42 will help you prepare for the material covered in the first section of the next chapter.


Solve the system:x + y + 2z = 19 y + + 2z =What makes it fairly easy to find the solution?

x + y + 2z = 19 y + + 2z = 13 5. z = Z

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