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Question

Find the value of λ, if x=λ and y=52 is a solution of the equation x+4y7=0.

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Solution

x=λ, y=52

Equation is x + 4y - 7 = 0

Substituting the value of x and y,

λ +4×527=0

λ+107=0

λ+3=0

λ=3 λ=3

Hence, λ=3


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