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Question
Compute the following sums:
`[[3 -2],[1 4]]+ [[-2 4 ],[1 3]]`
Solution
`[[3 -2],[1 4]]+ [[-2 4 ],[1 3]]`
`⇒[[3-2 -2+4],[1+1 4+3]]`
`⇒[[1 2],[2 7]]`
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