Answers

  • Brainly User
2016-06-16T23:58:10+08:00
First number: x
Second number: 3x
Third number: x + 15

Equation:
(x) + (3x) + (x + 15) = 5
5x + 15  = 5
5x = 5 - 15
5x = -10
5x/5 = -10/5
x = -2

SUBSTITUTE:
First number: x = -2
Second number: 3(-2) = -6
Third number: -2 + 15 = 13

Check:
-2 + -6 + 13 = 5
-8 + 13 = 5
5 = 5  (True)

ANSWER:  The numbers are -2,  -6,  and 13.

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