Respuesta :

mykiahgriffiths

Answer:

z=6

Step-by-step explanation:

2z+z+9=27

3z+9=27

3z=18

z=6

vgalesi3314

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