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Question
Wherever possible, write the following as a single matrix.
`[(1, 2),(3, 4)] + [(-1, -2),(1, -7)]`
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Solution
`[(1, 2),(3, 4)] + [(-1, -2),(1, -7)]`
= `[(1 - 1, 2 - 2),(3 + 1, 4 - 7)]`
= `[(0, 0),(4, -3)]`
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