0000:00:00:00:00Start7Number 7ExplanationThe value of xxx that satisfies ∣3xx2x∣=∣3112∣\begin{vmatrix} 3x & x \\ 2 & x \end{vmatrix} = \begin{vmatrix} 3 & 1 \\ 1 & 2 \end{vmatrix}3x2xx=3112 is ....5 and −35 \text{ and } -35 and −3−5 and 3-5 \text{ and } 3−5 and 353 and −1\frac{5}{3} \text{ and } -135 and −1−53 and 1-\frac{5}{3} \text{ and } 1−35 and 15 and −15 \text{ and } -15 and −1
7Number 7ExplanationThe value of xxx that satisfies ∣3xx2x∣=∣3112∣\begin{vmatrix} 3x & x \\ 2 & x \end{vmatrix} = \begin{vmatrix} 3 & 1 \\ 1 & 2 \end{vmatrix}3x2xx=3112 is ....5 and −35 \text{ and } -35 and −3−5 and 3-5 \text{ and } 3−5 and 353 and −1\frac{5}{3} \text{ and } -135 and −1−53 and 1-\frac{5}{3} \text{ and } 1−35 and 15 and −15 \text{ and } -15 and −1
