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0.006a+0.02=0.2
We move all terms to the left:
0.006a+0.02-(0.2)=0
We add all the numbers together, and all the variables
0.006a-0.18=0
We move all terms containing a to the left, all other terms to the right
0.006a=0.18
a=0.18/0.006
a=30
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