3a+13=9

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Solution for 3a+13=9 equation: 



3a+13=9

We move all terms to the left:

3a+13-(9)=0

We add all the numbers together, and all the variables

3a+4=0

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

3a=-4

a=-4/3

a=-1+1/3

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