s27nvil s27nvil 19-06-2021 Mathematics contestada x + 4 + 2x + 5 10x – 3x + 7 5x + 6y + 2xy + 4x – 2y 7t + 2r – 3t + r 14 + 11p – 12 8q – 3t + 4q + 9 may u please simplify these