3n+4n=49

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Solution for 3n+4n=49 equation: 



3n+4n=49

We move all terms to the left:

3n+4n-(49)=0

We add all the numbers together, and all the variables

7n-49=0

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

7n=49

n=49/7

n=7

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