If 3x + 5y + 7z = 49 and 9x + 8y + 21z = 126, then what is the value of y? – OfficerPath

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MCQ Practice

If 3x + 5y + 7z = 49 and 9x + 8y + 21z = 126, then what is the value of y?

Subject: MathematicsTopic: Algebra

A

4

B

2

C

3

D

5

Correct Answer: C

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