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n=4+1/5
We move all terms to the left:
n-(4+1/5)=0
We add all the numbers together, and all the variables
n-(1/5+4)=0
We get rid of parentheses
n-4-1/5=0
We multiply all the terms by the denominator
n*5-1-4*5=0
We add all the numbers together, and all the variables
n*5-21=0
Wy multiply elements
5n-21=0
We move all terms containing n to the left, all other terms to the right
5n=21
n=21/5
n=4+1/5
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