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यदि 3x + 5y + 7z = 49 तथा 9x + 8y + 21z ...

यदि `3x + 5y + 7z = 49` तथा `9x + 8y + 21z = 126` है, तो `y` का मान क्या है?

A

4

B

2

C

3

D

5

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
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