add comment about convention in rings with mixed addition and multiplication

dcernst / IBL-AbstractAlgebra

IBL course materials for an undergraduate first-semester abstract algebra course that emphasizes visualization.

http://dcernst.github.io/IBL-AbstractAlgebra/

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add comment about convention in rings with mixed addition and multiplication #123

Closed dcernst closed 2 years ago

dcernst commented 4 years ago

When we have a mixture of multiplication and addition, the standard conventions (i.e., PEMDAS) hold. For example, when we write ab+c, this is short for (ab)+c and NOT a(b+c).

dcernst commented 2 years ago

Done.