SOLUTION: 3(9k-4)-4(5n-3)

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Question 157811: 3(9k-4)-4(5n-3)
Answer by jim_thompson5910(35256) About Me  (Show Source):
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3(9k-4)-4(5n-3) = 3(9k)-3(4)-4(5n)-4(-3) = 27k-12-20n+12 = 27k-20n