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(6a+11)=20130
We move all terms to the left:
(6a+11)-(20130)=0
We get rid of parentheses
6a+11-20130=0
We add all the numbers together, and all the variables
6a-20119=0
We move all terms containing a to the left, all other terms to the right
6a=20119
a=20119/6
a=3353+1/6
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