3a+9=27-a

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Solution for 3a+9=27-a equation: 



3a+9=27-a

We move all terms to the left:

3a+9-(27-a)=0

We add all the numbers together, and all the variables

3a-(-1a+27)+9=0

We get rid of parentheses

3a+1a-27+9=0

We add all the numbers together, and all the variables

4a-18=0

We move all terms containing a to the left, all other terms to the right

4a=18

a=18/4

a=4+1/2

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