Respuesta :

Answer:

z=6

Step-by-step explanation:

2z+z+9=27

3z+9=27

3z=18

z=6

Answer: z=6

Step-by-step explanation:

2z+z+9=27

combine z terms

3z+9=27

subtract 9 from both sides

3z=18

divide both sides by 3

z=6

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