Question

You need to find three numbers that come in quick succession in the order of numbers (ex. 1, 2 and 3) and which

in total gives 30. What are the numbers?
equation

Answer 1

set middle number=x

then left side number=x-1

and right side number=x+1

(x-1)+x+(x+1)＝30

3x=30

x=10

x-1=9

x+1=11

numbers are 9,10,11