1+2n-4=9

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Solution for 1+2n-4=9 equation: 



1+2n-4=9

We move all terms to the left:

1+2n-4-(9)=0

We add all the numbers together, and all the variables

2n-12=0

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

2n=12

n=12/2

n=6

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