Question

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

Answer 1

(Q-R)+(S-T)
(7m+3n-11-2m)+(n+5- -m-3n+8)
5m+3n-11+-2n+-3+-m
4m+n+-14

Answer 2

[Q-R]+[S-T]

[Q-R]

7m+3n-(11-2m)

7m+3n-11+2m

9m+3n-11

[S-T]

n+5-(-m-3n+8)

n+5+m+3n-8

4n+m-3

[Q-R]+[S-T]

9m+3n-11+4n+m-3

10m+7n-14

Explanation: