0.5a-9=11

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Solution for 0.5a-9=11 equation: 



0.5a-9=11

We move all terms to the left:

0.5a-9-(11)=0

We add all the numbers together, and all the variables

0.5a-20=0

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

0.5a=20

a=20/0.5

a=40

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