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Help for 10 points!

Help for 10 points!-example-1
User Sitifensys
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1 Answer

2 votes

Answer:

(C) 10m + 7n - 14

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

User Prince Sodhi
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