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Q:

यदि 4x + 5y = 83 और $$ \ {3x\over2y}={21\over22}$$ है तो y- x का मान क्या है?

  • 1
    3
  • 2
    4
  • 3
    7
  • 4
    11
  • 5
    None of these
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Answer : 2. "4"

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