This algebra video tutorial explains how to solve system of equations with 3 variables and with word problems. It contains two example word problems on investment and on total value.

New Algebra Playlist:
https://www.youtube.com/watch?v=nTn9gVqRfKY&list=PL0o_zxa4K1BUeF2o-MlNpbRiS-oE2Kn6J&index=2

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