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65=66/a+43
We move all terms to the left:
65-(66/a+43)=0
Domain of the equation: a+43)!=0We get rid of parentheses
a∈R
-66/a-43+65=0
We multiply all the terms by the denominator
-43*a+65*a-66=0
We add all the numbers together, and all the variables
22a-66=0
We move all terms containing a to the left, all other terms to the right
22a=66
a=66/22
a=3
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