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0.5a+6.2=12
We move all terms to the left:
0.5a+6.2-(12)=0
We add all the numbers together, and all the variables
0.5a-5.8=0
We move all terms containing a to the left, all other terms to the right
0.5a=5.8
a=5.8/0.5
a=11+0.3/0.5
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