SOLUTION: if 15 is decreased by 7 times the sum of 5 and 3 times a number, the result is 12 more than twice the sum of the number and 7. find the number?

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Question 904494: if 15 is decreased by 7 times the sum of 5 and 3 times a number, the result is 12 more than twice the sum of the number and 7. find the number?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
15-7(3n+5) = (2n+7) + 12
-20 = 23n + 19
-39 = 23n
-39/23 = n