SOLUTION: 6n-42=4n

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Question 7553: 6n-42=4n
Answer by bonster(299) About Me  (Show Source):
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add 42 to both sides:
(6n-42)+42=(4n)+42
6n=4n+42

subtract 4n from both sides
(6n)-4n=(4n+42)-4n
2n=42
n=21