SOLUTION: One number is 7 less than three times a second number the sum of the two numbers is 13 find each number

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Question 1033037: One number is 7 less than three times a second number the sum of the two numbers is 13 find each number
Answer by fractalier(6550) About Me  (Show Source):
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Call the numbers x and y. Then we write
x = 3y - 7 and
x + y = 13
Now substitute the first into the second and we get
3y-7 + y = 13
4y - 7 = 13
4y = 20
y = 5
so that
x = 8