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For what value fo x [[2x,0,0],[0,1,2],...

For what value fo x
`[[2x,0,0],[0,1,2],[-1,2,0]]=[[1,0,0],[2,3,4],[0,3,5]]` ?

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`[[2x,0,0],[0,1,2],[-1,2,0]]=[[1,0,0],[2,3,4],[0,3,5]]`
or, `2x[[1,2],[2,0]]=1[[3,4],[3,5]]`
or, 2x(0-4)=15-12
-8x=3 or, x=-3/8
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