Respuesta :

Answer:

g+3g would be 4g since they stack.      8d-d would be 7d.

Step-by-step explanation:

billgkgk

Answer:   g + 3g = 4g

and 8d - d = 7d

If you have to combine them it would be 7d + 4g

Step-by-step explanation:

Imagine a "1" in front of any letter/variable that you have to add or subtract

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