AvreeanaS6249 AvreeanaS6249 12-01-2023 Mathematics contestada 1. 5x •(4y + 3x) = 5x •(3x + 4y); 2. 7x + (9x + 8) = (7x + 9x) + 8 ; 3. 5(3x + y) = 5(3x + 1y); 4. 7n + 2n = (7 + 2)n