Seudónimo Seudónimo 18-11-2019 Mathematics contestada WILL MARK BRAINLIEST (if there is an explanation:)) Given: Q = 7m + 3n, R = 11 - 2m, S = n + 5, and T = -m - 3n + 8. Simplify R - [S + T]. A. m - 2n - 2 B. -m + 2n - 2 C. 3m - 4n + 14 D. -3m - 4n + 14