Question

the sum of three consecutive odd number is 57. find the number

Answer 1

let the no. be x . x +2,x+4 then sum 3x +6 =57 then x = 17 the x+2 17 +2 = 19 x+4 22

Answer 2

1+x+3+x+5+x=57
9+3x=57
3x=57-9
x=48/3
x=16

now multiple 1+16=17
3+16=19
5+16=21