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Advanced Math
/ Nonlinear equations in one variable and systems of equations in two variables
Difficulty: Hard
If 
, what is t in terms of u ?
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Explanation
Choice D is correct. Multiplying both sides of the given equation by 
yields 
. Dividing both sides of this equation by 
yields 
. Adding 2 to both sides of this equation yields 
, which can be rewritten as 
. Since the fractions on the right-hand side of this equation have a common denominator, adding the fractions yields 
. Applying the distributive property to the numerator on the right-hand side of this equation yields 
, which is equivalent to 
.
Choices A, B, and C are incorrect and may result from various misconceptions or miscalculations.