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7/a=2+1/a
We move all terms to the left:
7/a-(2+1/a)=0
Domain of the equation: a!=0
a∈R
Domain of the equation: a)!=0We add all the numbers together, and all the variables
a!=0/1
a!=0
a∈R
7/a-(1/a+2)=0
We get rid of parentheses
7/a-1/a-2=0
We multiply all the terms by the denominator
-2*a+7-1=0
We add all the numbers together, and all the variables
-2a+6=0
We move all terms containing a to the left, all other terms to the right
-2a=-6
a=-6/-2
a=+3
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