8.1=+0.9a

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Solution for 8.1=+0.9a equation: 



8.1=+0.9a

We move all terms to the left:

8.1-(+0.9a)=0

We get rid of parentheses

-0.9a+8.1=0

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

-0.9a=-8.1

a=-8.1/-0.9

a=+9

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