-6=9-3a

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Solution for -6=9-3a equation: 



-6=9-3a

We move all terms to the left:

-6-(9-3a)=0

We add all the numbers together, and all the variables

-(-3a+9)-6=0

We get rid of parentheses

3a-9-6=0

We add all the numbers together, and all the variables

3a-15=0

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

3a=15

a=15/3

a=5

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