SOLUTION: one number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number.

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Question 389057: one number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Find the larger number.
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Let the smaller number be a, and the larger number be a+12. Then,

a + 2(a+12) = 39

3a + 24 = 39

a = 5, a+12 = 17.