If x = 3, y = 2 is a solution of the equation 5x - 7y = k, find the value of k and write the resultant equation.

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Solution

Given equation $5 x - 7 y = k$ and solution is $x = 3$ and $y = 2$
Then $5 x - 7 y = k$
Put the value of $x = 3$ and $y = 2$ we get
$5 \times 3 - 7 \times 2 = k$
$\Rightarrow 15 - 14 = k$
$k = 1$

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