Question 959420
(x +2x+1 +3x-4) / 3 = 31
here we have used the definition of the mean
(x +2x+1 +3x-4 = 93
multiply both sides of = by 3
6x -3 = 93
6x = 96
x = 16
the numbers are 16, 33, 44
note that (16 +33 +44) / 3 = 31