Answer :

R = 11 - 2m
S = n + 5 
T = -m - 3n + 8

R - S + T
(11 - 2m) - (n + 5) + (-m - 3n + 8)
6 - 2m - n - m - 3n + 8 
14 - 3m - 4n 
-3m - 4n + 14 

Answer:

B,  -m+2n-2

Step-by-step explanation:

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