sympy__sympy-15599

Mod(3*i, 2) unchanged

Verdict: the issue points to the file or function that was changed (Tier B).

`Mod(3*i, 2)` should reduce to `Mod(i, 2)` (as reported in [this post](https://stackoverflow.com/questions/53302669/sympify-does-not-simplify-remainder-as-expected)) and will do so with a change something like this:

The two checks disagreed (stated fix vs. points to it); the lower reading shown: “`Mod(3*i, 2)` should reduce to `Mod(i, 2)` (as reported in [this post](https://stackoverflow.com/questions/53302669/sympify-does-not-simplify-remaind…”

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