Respuesta :

Galxi
I'm not positive, but I think it's:
4+(3x)


jjkool13

Answer:

4+(3x)

Step-by-step explanation:

The product of three and a number x can be written as 3x.

"Sum" means that we add 4 and 3x.

If we add 4 and 3x we have 4+3x.

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