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Find the value of ЁЭЬЖ, if x = −ЁЭЬЖ and y =`5/2`
is a solution of the equation x + 4y – 7 = 0.
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Given that
x + 4 y - 7 = 0
It is given that x = -λ and y = `5/2 ` is a solution of the equation x + 4y - 7 = 0
∴ `- 1 + 4 xx 5/2 - 7 = 0 `
⇒ - λ + 10 - 7 = 0
⇒ - λ = - 3
⇒ λ = 3
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