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12a+14=392+a
We move all terms to the left:
12a+14-(392+a)=0
We add all the numbers together, and all the variables
12a-(a+392)+14=0
We get rid of parentheses
12a-a-392+14=0
We add all the numbers together, and all the variables
11a-378=0
We move all terms containing a to the left, all other terms to the right
11a=378
a=378/11
a=34+4/11
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