Respuesta :

Answer:

3x-x+2=12

2x+2=12

2x = 10

x=5

Answer:

d

Step-by-step explanation:

Given

3x - x + 2 = 12, that is

2x + 2 = 12 ( subtract 2 from both sides )

2x = 10 ( divide both sides by 2 )

x = 5

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