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14a-(3a-8)=85
We move all terms to the left:
14a-(3a-8)-(85)=0
We get rid of parentheses
14a-3a+8-85=0
We add all the numbers together, and all the variables
11a-77=0
We move all terms containing a to the left, all other terms to the right
11a=77
a=77/11
a=7
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