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0 votes
4.1k views
in Mathematics by (31.5k points)

If [(1,0,0)(0,y,0)(0,0,1)] [(x)(-1)(z)] = [(1)(2)(1)], find x + y + z. 

1 Answer

+1 vote
by (61.2k points)
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Best answer

x = 1, y = -2, z = 1

or x + y + z = 0

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