30=9a+3

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Solution for 30=9a+3 equation: 



30=9a+3

We move all terms to the left:

30-(9a+3)=0

We get rid of parentheses

-9a-3+30=0

We add all the numbers together, and all the variables

-9a+27=0

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

-9a=-27

a=-27/-9

a=+3

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