Respuesta :

Answer:

-2a+b

Step-by-step explanation:

TheAnimeGirl

Answer:

[tex] - 2a + b[/tex]

solution,

[tex](a + 2b) - (3a + b) \\ = a + 2b - 3a - b[/tex]

Collect like terms

[tex] = a - 3a + 2b - b \\ [/tex]

Simplify:

[tex] - 2a + b[/tex]

Hope this helps..

good luck on your assignment....

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