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Question

Mathematics Question on Matrices

The value of 2y-3x, if
2[x5 7y−3]+[3−4 12]=[76\1514]2\begin {bmatrix}x &5\\\ 7&y-3\end{bmatrix}+\begin{bmatrix}3&-4\\\ 1&2\end{bmatrix}=\begin{bmatrix}7&6 \\\15&14\end{bmatrix} is:

A

12

B

-10

C

6

D

-5

Answer

12

Explanation

Solution

The correct option is (A):12