As far as I know, I can easily transform $ - (21x -7) $ into $ 7 - 21x $
But can I do the same with a module?
Would $ - |21x -7| $ also easily transform into $ 7 - 21x $? Or only transforming into $ -|7 - 21x| $ would be correct?
2026-04-09 14:32:05.1775745125
The logic of a module versus the logic of parentheses
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