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Select the correct answer.What is the least common denominator that can be used to solve this equation?1𝑥+2𝑥−3=5 A. 5⁢𝑥⁢(𝑥−3) B. 𝑥 C. 𝑥⁢(𝑥−3) D. 𝑥−3

Question

Select the correct answer.

What is the least common denominator that can be used to solve this equation?
1x+2x3=5 \frac{1}{x} + \frac{2}{x-3} = 5
A. 5𝑥(𝑥−3)
B. 𝑥
C. 𝑥(𝑥−3)
D. 𝑥−3

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Solution

To find the least common denominator (LCD) that can be used to solve the equation 1x+2x3=5\frac{1}{x} + \frac{2}{x-3} = 5, follow these steps:

  1. Identify the denominators: The denominators in the equation are xx and x3x-3.

  2. Find the least common denominator (LCD): The LCD is the smallest expression that both denominators can divide into without leaving a remainder. For xx and x3x-3, the LCD is the product of these two distinct linear factors, since they have no common factors other than 1.

    Therefore, the LCD is x(x3)x(x-3).

  3. Select the correct answer: From the given options:

    • A. 5x(x3)5x(x-3)
    • B. xx
    • C. x(x3)x(x-3)
    • D. x3x-3

    The correct answer is C. x(x3)x(x-3).

So, the least common denominator that can be used to solve the equation is x(x3)x(x-3).

This problem has been solved

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