OG详解-OG2 数学2 Q10

Choice C is correct. Multiplying each side of the given equation by  y  yields the equivalent equation  y7b​​ = 11x . Dividing each side of this equation by  11 yields  y77b​= x , or x = y77b​  .
Choice A is incorrect. This equation is not equivalent to the given equation. Choice B is incorrect. This equation is not equivalent to the given equation. Choice D is incorrect. This equation is not equivalent to the given equation.