Question

How to solve this question???
class 12, chapter matrices​

Answer 1

Answer:

2*$\left[\begin{array}{ccc}3&4\\5&x\end{array}\right]$ + $\left[\begin{array}{ccc}1&y\\0&1\end{array}\right]$ = $\left[\begin{array}{ccc}7&0\\10&5\end{array}\right]$

$\left[\begin{array}{ccc}6&8\\10&2x\end{array}\right]$ +  $\left[\begin{array}{ccc}1&y\\0&1\end{array}\right]$ = $\left[\begin{array}{ccc}7&0\\10&5\end{array}\right]$

$\left[\begin{array}{ccc}7&8+y\\10&2x+1\end{array}\right]$ = $\left[\begin{array}{ccc}7&0\\10&5\end{array}\right]$

8 + y = 0

y = -8

2x + 1 = 5

2x = 5 - 1

2x = 4

x = 2

so,

x-y

= 2 - (-8)

= 2 + 8

= 10

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