Question 4
Find the value of k, if $x = 2, y = 1$ is a solution of the equation $2 x + 3 y = k .$

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Solution

$= 2 x + 3 y = k$
Given
$x = 2, y = 1$ is the solution of the given equation.
Putting the value of x and y in the equation $2 x + 3 y = k$ , we get,
$2 \times 2 + 3 \times 1 = k$
$\Rightarrow k = 4 + 3$
$\Rightarrow k = 7$

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