SOLUTION: One number is twice another number. The sum of the two numbers is 39. Find both numbers

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Question 105134This question is from textbook
: One number is twice another number. The sum of the two numbers is 39. Find both numbersThis question is from textbook

Answer by MathLover1(3376) About Me  (Show Source):
You can put this solution on YOUR website!
If one number is twice another number, we can first number write as an x, and second number as an 2x.
If the sum of the two numbers is 39, we can write it:

x+%2B+2x+=+39
3x+=+39
x+=+39%2F3
x+=+13 this would be first number
2x+=+13%2A2
2x+=+26 this would be second number
their sum:
13+%2B+26+=+39
39+=+39