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by iacvlvs 5779 days ago
No.

It's converting EVERYTHING to K, then doing the arithmetic, then converting the result to C.

0C + 0C = 273K + 273K = 546K = 273C

0C + 0C - 0C = 273K + 273K - 273K = 273K = 0C

0C - 0C => 273K - 273K = 0K

0C + 0K = 273K + 0K = 273K = 0C