1=7-2n

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Solution for 1=7-2n equation: 



1=7-2n

We move all terms to the left:

1-(7-2n)=0

We add all the numbers together, and all the variables

-(-2n+7)+1=0

We get rid of parentheses

2n-7+1=0

We add all the numbers together, and all the variables

2n-6=0

We move all terms containing n to the left, all other terms to the right

2n=6

n=6/2

n=3

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