Respuesta :

Answer:

a=[tex]\frac{18+3b+9c}{14}[/tex]

Step-by-step explanation:

You are looking for a meaning a needs to be alone.

So subtract -3b+9c from both sides

14a=18+3b+9c

Then divided the right side by 14 to get a alone.

a=[tex]\frac{18+3b+9c}{14}[/tex]

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