12=1+7n+4

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Solution for 12=1+7n+4 equation: 



12=1+7n+4

We move all terms to the left:

12-(1+7n+4)=0

We add all the numbers together, and all the variables

-(7n+5)+12=0

We get rid of parentheses

-7n-5+12=0

We add all the numbers together, and all the variables

-7n+7=0

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

-7n=-7

n=-7/-7

n=1

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