Respuesta :

Answer:

4+4y

Step-by-step explanation:

3x - y + 4 - 3x + 5y

-y+5y=4y

4+4y

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3x-y+4-3x+5y
=3x+-y+4+-3x+5y
=3x+-y+4+-3x+5y
=(3x+-3)+(-y+5y)+(4)
=4y+4