SOLUTION: what is the solution to this problem? the difference of two positive numbers is 28. one of the numbers is 3 times the other. find the two numbers

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Question 275130: what is the solution to this problem?
the difference of two positive numbers is 28. one of the numbers is 3 times the other. find the two numbers
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
let the number be a and b given:
a+-+b+=+28
a+=+3b
By substitution:
3b+-+b+=+28
2b+=+28
b+=+14
and
a+=+3b
a+=+42
The numbers are 42 and 14