-169=8a-9

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Solution for -169=8a-9 equation: 



-169=8a-9

We move all terms to the left:

-169-(8a-9)=0

We get rid of parentheses

-8a+9-169=0

We add all the numbers together, and all the variables

-8a-160=0

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

-8a=160

a=160/-8

a=-20

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