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Mathematics, 31.03.2021 22:00 gracepiechowiak

Which set of expressions are not equivalent? (9 c + 12) - c - 3 and 8 c + 9
4 c - 2 c - 3 and 2 c - 3
5 c - 2 c + 8 - 4 and 3 c + 4
0.5 + (10 c + 8) and 5 c - 4

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Which set of expressions are not equivalent? (9 c + 12) - c - 3 and 8 c + 9
4 c - 2 c - 3 and...
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