Question

Given: Q = 7m + 3n, R = 11 - 2m, S = n + 5, and T = -m - 3n + 8.
Simplify R - [S + T].

Answer 1

R-[S+T]
11-2m-[n+5+(-m-3n+8)]
OPEN ( )
11-2m-[n+5-m-3n+8]
OPEN [ ]
11-2m-n-5+m+3n-8
GROUP LIKE TERMS
11-8-5-2m+m+3n-n
SOLVE IT
-2-m+2n