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Class 10 Mathematics Pair of Linear Equations in Two Variables Conditions for solvabilityMedium

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What is the value of (k) for (5x+ky=35) and (x+4y=7) to have infinitely many solutions?

Answer and explanation

Correct answer: (20)

The first equation must be (5) times the second, so (k=20). A common multiplier makes both lines coincident.

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Linear Equations Dependent Pair Parameter Conditions For Solvability Pair Of Linear Equations In Two Variables Mathematics Class 10 Mcq

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