EMERGING MARKETS-Brazil, Mexico currencies slip, Latam stocks mostly gain

Mexico's peso and the Brazilian real fell on Monday, while most other Latin American currencies firmed against a weaker dollar as investors awaited the G20 summit where the U.S. and Chinese presidents are expected to meet to revive trade talks. Argentina's peso rose 0.9% as the dollar weakened on bets the Federal Reserve may cut interest rates more than once this year, while currencies in Chile and Peru gained 0.1% and 0.4% respec