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7(1+4n)+6n=245
We move all terms to the left:
7(1+4n)+6n-(245)=0
We add all the numbers together, and all the variables
7(4n+1)+6n-245=0
We add all the numbers together, and all the variables
6n+7(4n+1)-245=0
We multiply parentheses
6n+28n+7-245=0
We add all the numbers together, and all the variables
34n-238=0
We move all terms containing n to the left, all other terms to the right
34n=238
n=238/34
n=7
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