9a-2=-20

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Solution for 9a-2=-20 equation: 



9a-2=-20

We move all terms to the left:

9a-2-(-20)=0

We add all the numbers together, and all the variables

9a+18=0

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

9a=-18

a=-18/9

a=-2

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