8=2a+9

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Solution for 8=2a+9 equation: 



8=2a+9

We move all terms to the left:

8-(2a+9)=0

We get rid of parentheses

-2a-9+8=0

We add all the numbers together, and all the variables

-2a-1=0

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

-2a=1

a=1/-2

a=-1/2

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