7+21n=42+14n

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Solution for 7+21n=42+14n equation: 



7+21n=42+14n

We move all terms to the left:

7+21n-(42+14n)=0

We add all the numbers together, and all the variables

21n-(14n+42)+7=0

We get rid of parentheses

21n-14n-42+7=0

We add all the numbers together, and all the variables

7n-35=0

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

7n=35

n=35/7

n=5

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