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If [xy ,4 , z+6 , x+y]=[8,w,0, 6], writ...

If `[xy ,4 , z+6 , x+y]=[8,w,0, 6],` write the value of `(x+y+z)dot`

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`[[xy,4],[z+6,x+y]] = [[8,w],[0,6]]`
Corresponding elements of equal matrices are equal .
`therefore z+6=0 text { and } x+y=6`
`Rightarrow z=-6 text { and } x+y=6`
`therefore` Therefore, `x+y+z=6-6=0`.
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