Respuesta :

sgoel24

Answer:

12x+9

Step-by-step explanation:

you have to add the like terms which are 4x and 8x which give you 12x. And so that get the answer 12x+9

ba1029
12x+9

Because 4x+8x=12x and with it’s leftover which’s is 9 equals 12x+9

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