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n=25-3n
We move all terms to the left:
n-(25-3n)=0
We add all the numbers together, and all the variables
n-(-3n+25)=0
We get rid of parentheses
n+3n-25=0
We add all the numbers together, and all the variables
4n-25=0
We move all terms containing n to the left, all other terms to the right
4n=25
n=25/4
n=6+1/4
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