3n+5n=5+7

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Solution for 3n+5n=5+7 equation: 



3n+5n=5+7

We move all terms to the left:

3n+5n-(5+7)=0

We add all the numbers together, and all the variables

3n+5n-12=0

We add all the numbers together, and all the variables

8n-12=0

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

8n=12

n=12/8

n=1+1/2

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