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-2/3n+21=1/3n
We move all terms to the left:
-2/3n+21-(1/3n)=0
Domain of the equation: 3n!=0
n!=0/3
n!=0
n∈R
Domain of the equation: 3n)!=0We add all the numbers together, and all the variables
n!=0/1
n!=0
n∈R
-2/3n-(+1/3n)+21=0
We get rid of parentheses
-2/3n-1/3n+21=0
We multiply all the terms by the denominator
21*3n-2-1=0
We add all the numbers together, and all the variables
21*3n-3=0
Wy multiply elements
63n-3=0
We move all terms containing n to the left, all other terms to the right
63n=3
n=3/63
n=1/21
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