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54/a=6
We move all terms to the left:
54/a-(6)=0
Domain of the equation: a!=0We multiply all the terms by the denominator
a∈R
-6*a+54=0
We add all the numbers together, and all the variables
-6a+54=0
We move all terms containing a to the left, all other terms to the right
-6a=-54
a=-54/-6
a=+9
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