3a-(-a)=

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Solution for 3a-(-a)= equation: 



3a-(-a)=

We move all terms to the left:

3a-(-a)-()=0

We add all the numbers together, and all the variables

3a-(-1a)-()=0

We add all the numbers together, and all the variables

3a-(-1a)=0

We get rid of parentheses

3a+1a=0

We add all the numbers together, and all the variables

4a=0

a=0/4

a=0

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