Answer:
17, 18, 19
Step-by-step explanation:
Let's say that the three consecutive numbers are
x-1,x,x+1.
Twice the sum of the two smallest numbers:
2(x -1 +x)
13 more than three times the largest number
13+3(x+1).
2(2x-1)=13+3x+3
4x-2=3x+16
4x-3x=16+2
x=18. So the numbers are:
17, 18, 19
