If $x = 2, y = 1$ is a solution of the equation $2 x + 3 y = k$ , then $k =$

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Solution

Given $x = 2, y = 1$ is the solution of $2 x + 3 y = k$
$⟹ 2 (2) + 3 (1) = k$
$⟹ k = 4 + 3 = 7$

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