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12a-10=69+62
We move all terms to the left:
12a-10-(69+62)=0
We add all the numbers together, and all the variables
12a-10-131=0
We add all the numbers together, and all the variables
12a-141=0
We move all terms containing a to the left, all other terms to the right
12a=141
a=141/12
a=11+3/4
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