1-3a=9

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Solution for 1-3a=9 equation: 



1-3a=9

We move all terms to the left:

1-3a-(9)=0

We add all the numbers together, and all the variables

-3a-8=0

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

-3a=8

a=8/-3

a=-2+2/3

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