If where and what is in terms of
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Choice A is correct. Multiplying both sides of the equation by the denominators of the rational expressions in the equation gives The student should then divide both sides by 2 to isolate the variable, yielding the equation
Choice B is not the correct answer. This equation may result if a student does not divide both terms by 2 when isolating in the equation
Choice C is not the correct answer. This equation may result from the student not distributing the 4 when multiplying 4 and
Choice D is not the correct answer. This equation may result from solving for yielding A student who does not understand the meaning of the variables may then switch them to match the answer choice.
Students must complete operations with multiple terms and manipulate an equation to isolate the variable of interest.