Answer:
-m +2n -2
Step-by-step explanation:
R - [S + T]
We know R = 11 - 2m, S = n + 5, and T = -m - 3n + 8.
Substituting these values in
11 - 2m - [n + 5 +-m - 3n + 8]
Combining like terms
11 - 2m - [n + 5 +-m - 3n + 8]
11-2m - [-2n -m+13]
Distributing the negative sign
11-2m +2n +m-13
Combine like terms
-2 -m +2n
-m +2n -2
