3+4=7-n

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Solution for 3+4=7-n equation: 



3+4=7-n

We move all terms to the left:

3+4-(7-n)=0

We add all the numbers together, and all the variables

-(-1n+7)+3+4=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

1n-7+7=0

We add all the numbers together, and all the variables

n=0

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