4a+9=15+a

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Solution for 4a+9=15+a equation: 



4a+9=15+a

We move all terms to the left:

4a+9-(15+a)=0

We add all the numbers together, and all the variables

4a-(a+15)+9=0

We get rid of parentheses

4a-a-15+9=0

We add all the numbers together, and all the variables

3a-6=0

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

3a=6

a=6/3

a=2

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