a+0.5a=12

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Solution for a+0.5a=12 equation: 



a+0.5a=12

We move all terms to the left:

a+0.5a-(12)=0

We add all the numbers together, and all the variables

1.5a-12=0

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

1.5a=12

a=12/1.5

a=8

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