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.

Question 127120: 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 solver91311(24713) (Show Source): You can put this solution on YOUR website!
One number is x, and the other is y.

x is 12 more than y:

The smaller number, y, plus twice the larger number, x, is 39:

Substituting:

Since y = 5, x must be 5 + 12 = 17.

Check: 5 + 2(17) = 5 + 34 = 39. Answer checks.
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