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Advanced Math
/ Nonlinear equations in one variable and systems of equations in two variables
Difficulty: Medium
The given equation relates the positive numbers , , and . Which equation correctly expresses in terms of and ?
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Explanation
Choice D is correct. It's given that the values of , , and are positive. Therefore, dividing each side of the given equation by yields . Subtracting from each side of this equation yields . Dividing each side of this equation by yields , or .
Choice A is incorrect. This equation is equivalent to , not .
Choice B is incorrect. This equation is equivalent to , not .
Choice C is incorrect. This equation is equivalent to , not .