3n+4-n=18

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Solution for 3n+4-n=18 equation: 



3n+4-n=18

We move all terms to the left:

3n+4-n-(18)=0

We add all the numbers together, and all the variables

2n-14=0

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

2n=14

n=14/2

n=7

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