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

Equation $2 x + 3 y = k$
Where $x = 2, y = 1$
Put the value of $x$ and $y$ in equation
$⟹ k = 2 \times 2 + 3 \times 1$
$⟹ k = 4 + 3$
$∴ k = 7$

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