Q16 of 124 Page 167

If then write the value of (x + y).

If ,

Then a=e, b=f, c=g, d=h

Given, ,

So, x-y = 1, x+y =5, 2y = 4 and 2y+z = 9

Therefore, x+y = 5

Conclusion: x+y = 5

(Given answer is wrong)

Find the value of x and y, when

Find the value of (x + y) from the following equation :

1 A

Compute AB and BA, which ever exists when

and

1 B

Compute AB and BA, which ever exists when

and