Respuesta :

┏┓┏┳━━┳┓┏┓┏━━┓ ┃┗┛┃━━┫┃┃┃┃ ╭╮ ┃ ┃┏┓┃━━┫┃┫┗┫ ╰╯ ┃ ┗┛┗┻━━┻━┻━┻━━┛

Answer:

x=3

Step-by-step explanation:

6x+3x+3=30

9x=30-3

9x=27

x=27÷9

x=3

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