Need Help on this math problem. Thank you

Question

Three consecutive natural numbers have a sum of 93.

What is the greatest number?

Answer 1

using algebra...

x+(x+1)+(x+2)=93

3x+3=93

3x=90

x=30

x+1=31

x+2=32

without using algebra...

93/3=31, 31-1=30, and 31+1=32

the middle number is the mean