Find the value of $k$ if $x = 3$ and $y = 2$ is a solution of the equation $5 x + 3 y - k = 0$ .

k = 21

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k = 12

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k = 19

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k = 26

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Solution

The correct option is A $k = 21$
Given, equation is: $5 x + 3 y - k = 0$
Putting value of $x = 3$ and $y = 2$ in the above equation, we get
$5 (3) + 3 (2) - k = 0$
or, $15 + 6 - k = 0$
or, $21 - k = 0$
or, $k = 21$

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