9+0.5a=11

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Solution for 9+0.5a=11 equation: 



9+0.5a=11

We move all terms to the left:

9+0.5a-(11)=0

We add all the numbers together, and all the variables

0.5a-2=0

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

0.5a=2

a=2/0.5

a=4

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