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Question

Reduce to linear form 

\(\frac{5x + 1}{2x} = \frac{5}{4}\)

This question was previously asked in
RRB ALP/Technician 2018 CBT 2 Electronics Mechanic Question Paper (23-Jan-2019) (Shift 1)
The correct answer is
$5x + 2 = 0$

Equation Reduction Steps

The goal is to simplify the given fractional equation into a linear form (\(ax + b = 0\)).

  1. Start with the given equation:

    \(\frac{5x + 1}{2x} = \frac{5}{4}\)

  2. Cross-multiply: Multiply the numerator of the left side by the denominator of the right side, and the numerator of the right side by the denominator of the left side.

    \(4 \times (5x + 1) = 5 \times (2x)\)

  3. Expand both sides: Distribute the constants.

    \(20x + 4 = 10x\)

  4. Rearrange into linear form: Move all terms to one side to set the equation equal to zero. Subtract \(10x\) from both sides.

    \(20x - 10x + 4 = 0\)

    \(10x + 4 = 0\)

  5. Simplify the linear equation: Divide by the greatest common divisor (which is 2) to get the simplest linear form.

    \(\frac{10x}{2} + \frac{4}{2} = \frac{0}{2}\)

    \(5x + 2 = 0\)

This final equation, \(5x + 2 = 0\), is the linear form of the original fractional equation and matches Option B.

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Similar Questions

  1. For what value of K is the equation \(\frac{0.009}{K} = 0.1\) true?
  2. Arnab buys 9 oranges and 8 bananas for ₹276. When the cost of an orange is decreased by 10% and that of a banana remains the same, then the cost of 5 oranges and 10 bananas is ₹210. What is the original cost of 4 oranges and 3 bananas?
  3. If a + b = 7 and ab = 12, then \(a^2 + b^2\) is equal to:
  4. The value of (x - y)(x + y) + (y - z)(y + z) + (z - x)(z + x) is:

  5. What is the product of (x + a) and (x + b)?

  6. A 3-digit number is such that the units' digit, the tens' digit, and the hundreds' digit are in the ratio 1 : 2 : 3. The sum of this number and the number obtained by writing its digits in reverse order is 1332. Find the number.

  7. If \(a^2 + b^2 + c^2 + 189 = 6(a + 4b + 2c)\), then \(\sqrt{ab + bc + ca}\) is equal to:
  8. When the one-third of a number is increased by 83, the result is 97. Find the sum of the digits of the original number.
  9. A fraction becomes \(1\over2\) if 2 is added to the numerator and 5 is added to the denominator. It also becomes \(1\over 3\) if 2 is subtracted from both the numerator and denominator. The positive difference between the numerator and the denominator is:

  10. The cost of 12 pens and 7 pencils is ₹233. If the cost of a pen decreases by ₹1.50 and the cost of a pencil increases by ₹1, then the cost of 2 pens and 3 pencils is ₹48. What is the original cost of 2 pens and 3 pencils?


Important Questions from Algebric Equations

  1. For what value of K is the equation \(\frac{0.009}{K} = 0.1\) true?
  2. Arnab buys 9 oranges and 8 bananas for ₹276. When the cost of an orange is decreased by 10% and that of a banana remains the same, then the cost of 5 oranges and 10 bananas is ₹210. What is the original cost of 4 oranges and 3 bananas?
  3. Find the value of x satisfying: $5(5x^2 - 5) - 5(5x^2 + 7x - 2) = 14$
  4. The product of two positive numbers is 3645. If the first number is five times the second number, then the sum of the two numbers is:
  5. The product of two positive numbers is 80. If the first number is five times of the second number, then the sum of the two numbers is:
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