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6a^-2=a^-1+12
We move all terms to the left:
6a^-2-(a^-1+12)=0
We add all the numbers together, and all the variables
6a-(a^-1+12)-2=0
We get rid of parentheses
6a-a^+1-12-2=0
We add all the numbers together, and all the variables
5a-13=0
We move all terms containing a to the left, all other terms to the right
5a=13
a=13/5
a=2+3/5
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