Respuesta :

lorna1717

Answer:

9s+11

Step-by-step explanation:

Combine like terms → (7s+2s and 2+9 = 9s and 11) and boom

janessar2006

Answer:

[tex]9s + 11[/tex]

Step-by-step explanation:

First:

[tex]7s - 2s \\ = 9s[/tex]

second:

[tex]9 + 2 \\ = 11[/tex]

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