Respuesta :

romannp

Step-by-step explanation:

given,

Q=7m+3n

R=11-2m

S=n+5

T=-m-3n+8

Now,

Q+S-T=(7m+3n)+(n+5)-(-m-3n+8)

=7m+3n+n+5+m+3n-8

=8m+7n-3

fatoumata1288p2mm26
The answer is 8m+7n-3.hope this helps of it does please mark brainliest
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