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Try to prove the following using the general principle. (i) (x − y) + z = x − (y − z) for all numbers x, y, z (ii) (x + y) − z = x + (y − z) for all numbers x, y, z |
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Answer» Try to prove the following using the general principle. (i) (x − y) + z = x − (y − z) for all numbers x, y, z (ii) (x + y) − z = x + (y − z) for all numbers x, y, z |
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