Respuesta :
Answer:
12x + 3y
Step-by-step explanation:
Not sure what the blanks are, but here is what I did
8x + y + 4x + 2y
(combine like terms)
8x + 4x + 3y
(combine like terms)
12x + 3y
You must just combine like terms
8x + 4x and y + 2y
Which then becomes 12x + 3y
8x + 4x and y + 2y
Which then becomes 12x + 3y