If \(\begin{vmatrix} x & 3 \\ 2 & 7 \end{vmatrix} = 15\), find the value of x
\(\begin{vmatrix} x & 3 \\ 2 & 7 \end{vmatrix} = 15\) x x 7 - 2 x 3 = 15 7x - 6 = 15 7x = 15+6 7x = 21 x = 21/7 x = 3
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