a+2a=-2

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Solution for a+2a=-2 equation: 



a+2a=-2

We move all terms to the left:

a+2a-(-2)=0

We add all the numbers together, and all the variables

3a+2=0

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

3a=-2

a=-2/3

a=-2/3

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