Respuesta :

what is this ..........

:-/

Answer:

3st + 8s + 16t

Step-by-step explanation:

Let's simplify step-by-step.

5st+8s+9t−2st+7t

=5st+8s+9t+−2st+7t

Combine Like Terms:

=5st+8s+9t+−2st+7t

=(5st+−2st)+(8s)+(9t+7t)

=3st+8s+16t

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