3 years ago

Help for 10 points!

Mathematics

2 answers:

Arturiano [62]3 years ago

5 0

Answer:

Step-by-step explanation:

[Q-R]+[S-T] =[(7m+3n)-(11-2m)]+[(n+5)-(-m-3n+8)]=

=[7m+3n-11+2m] + [n+5+m+3n-8]=[9m+3n-11] + [4n+m - 3]=

=9m+3n-11+4n+m-3=10m + 7n - 14

jok3333 [9.3K]3 years ago

3 0

Answer:

Step-by-step explanation:

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