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Question

If $2x + 3y = 23$ and $x = 4$, then what is the value of $y$?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
5

The problem asks us to find the value of the variable y given a linear equation and the value of the variable x.

Solving the Linear Equation

We are given the equation:

$2x + 3y = 23$

And we know that:

$x = 4$

Substituting the Value of x

To find y, we substitute the value of x (which is 4) into the given equation:

$2(4) + 3y = 23$

Calculating the Value of y

Now, we simplify and solve for y:

  1. Multiply 2 by 4:

    $8 + 3y = 23$

  2. Subtract 8 from both sides of the equation to isolate the term with y:

    $3y = 23 - 8$

    $3y = 15$

  3. Divide both sides by 3 to find the value of y:

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

    $y = 5$

Therefore, the value of y is 5.

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Important Questions from Linear Equation in 2 Variable

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