bluegrassgamer bluegrassgamer 01-05-2020 Mathematics contestada Please Simplify these expressions: 1. 2a + 10 - 6 + 4a 2. -7 + 3x - 5x + 7 3. -5(3b - 2) + 10b 4. -8 - 4d + 3b - 6 + d