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Question

If $4x - 3y = 9$ and $x = 6$, then what is the value of y?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper PDF (31-Jan-2021) (Shift 1)
The correct answer is
5

Solving for y in a Linear Equation

We are given the equation $4x - 3y = 9$ and the value $x = 6$. We need to find the corresponding value of $y$.

Substitution Step

Substitute the given value of $x$ into the equation:

$4(6) - 3y = 9$

Equation Simplification

Simplify the equation:

$24 - 3y = 9$

Isolating the y Term

Subtract 24 from both sides to isolate the term containing $y$:

$ -3y = 9 - 24 $

$ -3y = -15 $

Calculating the Value of y

Divide both sides by -3 to solve for $y$:

$ y = \frac{-15}{-3} $

$ y = 5 $

Final Answer

The value of $y$ is 5.

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