If the first is x then the secoond is 3x. The third is
= 3x + 4
If the sum of the numbers is 25 then
x + 3x + 3x + 4 = 25
7x = 25 - 4
7x = 21
x = 21/7
= 3
Then 3x
= 3 * 3
= 9 and the third will be
= 3(3) + 4
= 13
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