If begin vmatrix 3 - 8711-2 - 4 vmatrix - begin vmatrix 887116 - 4lend vmatrix - find the value of x

Given 3x amp;7 2 amp; 4 = 8 amp;7 6 amp; 4 ⇒ 12x+14=32 42 ⇒ x= 2. ...

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Determinant

If begin vmat...

Question

If $∣ ∣ ∣ \begin{matrix} 3 x & 7 - 2 & 4 \end{matrix} ∣ ∣ ∣ = ∣ ∣ ∣ \begin{matrix} 8 & 7 6 & 4 \end{matrix} ∣ ∣ ∣$ , find the value of x.

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