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12.45a=102.45
We move all terms to the left:
12.45a-(102.45)=0
We add all the numbers together, and all the variables
12.45a-102.45=0
We move all terms containing a to the left, all other terms to the right
12.45a=102.45
a=102.45/12.45
a=8+1/4.3684210526316
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