# M:N:MC:9

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In the equation above, what is the value of *k*?

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Choice B is correct. Simplifying the numerators yields and cross-multiplication gives Solving for *k* yields

Choice A is not the correct answer. This value may result from not correctly applying the distributive property on the right-hand side, resulting in the expression in the numerator. Correctly applying the distributive property yields in the numerator.

Choice C is not the correct answer. This value may result from not correctly applying the distributive property on the left-hand side, resulting in the expression Correctly applying the distributive property yields in the numerator.

Choice D is not the correct answer. This value may result from not using the appropriate order of operations when simplifying either numerator.

Students must solve an algebraic equation in one variable.