3a+a=39-2a

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Solution for 3a+a=39-2a equation: 



3a+a=39-2a

We move all terms to the left:

3a+a-(39-2a)=0

We add all the numbers together, and all the variables

3a+a-(-2a+39)=0

We add all the numbers together, and all the variables

4a-(-2a+39)=0

We get rid of parentheses

4a+2a-39=0

We add all the numbers together, and all the variables

6a-39=0

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

6a=39

a=39/6

a=6+1/2

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