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-6+3=-3n+75
We move all terms to the left:
-6+3-(-3n+75)=0
We add all the numbers together, and all the variables
-(-3n+75)-3=0
We get rid of parentheses
3n-75-3=0
We add all the numbers together, and all the variables
3n-78=0
We move all terms containing n to the left, all other terms to the right
3n=78
n=78/3
n=26
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