Question

the sum of three consecutive natural numbers is 51. find the number

Answer 1

Let the first consecutive no. be x
then, second be x+1
third be x+2

according to the question,
x+x+1+x+2=51
3x+3=51
3x=51-3
3x=48
x=16

then,

x+1
=16+1
=17

x+2
=16+2
=18

the numbers are ...16,17 &18

Answer 2

x+x+1+x+2=51
3x+3=51
3x=51-3
3x=48
x=48÷3
x=16
x+1=17
x+2=18