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For what value of does the pair of equations and have infinitely many solutions?

Competition practiceAlgebra
  • A28
  • B15
  • C13
  • D14

Step-by-Step Solution

For infinitely many solutions, a₁/a₂ = b₁/b₂ = c₁/c₂: 2/4 = 3/6 = 7/k → 1/2 = 7/k → k = 14.
Answer: D) 14

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