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$The function f satisfies the functional equation 3 f (x) + 2 f (\frac{x + 59}{x - 1}) = 10 x + 30 for all real x \neq 1 . The value of f (7) is$

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Correct option is B

3f(x)+2fx+59x−1=10x+30x=7,3f(7)+2f(11)=70+30=100x=11,3f(11)+2f(7)=140f(7)−20=f(11)−220=−19−4⇒f(7)=4

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The function f satisfies the functional equation 3f(x)+2fx+59x−1=10x+30 for all real x≠1. The value of f(7) is

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$The function f satisfies the functional equation 3 f (x) + 2 f (\frac{x + 59}{x - 1}) = 10 x + 30 for all real x \neq 1 . The value of f (7) is$