Let (\begin{vmatrix}3x&-7\\\1&4\end{vmatrix}=\begin{vmatrix}... | Mathematics | SolveeIt | Solveeit

Today, October 3

Question

Let $\begin{vmatrix}3x&-7\\\1&4\end{vmatrix}=\begin{vmatrix}3&2\\\ 4&x\end{vmatrix}$ , then value of x is:

A

$\frac{-5}{3}$

B

1

C

-1

D

$\frac{2}{7}$

Answer

$\frac{-5}{3}$

Explanation

Solution

The correct option is (A): $\frac{-5}{3}$