Find the value of λ, if x=−λ and y=52 is a solution of the equation x+4y−7=0.
x=−λ, y=52
Equation is x + 4y - 7 = 0
Substituting the value of x and y,
−λ +4×52−7=0
⇒ −λ+10−7=0
⇒ −λ+3=0
∴ −λ=−3⇒ λ=3
Hence, λ=3