Question

Three positive integers are ( x-1), and (x+1). If their sum is 105, find the numbers.

Answer 1

Suppose the third no. is x

x-1+x+1+x=105

3x+0=105

3x=105

$x = \frac{105}{3}$

x=35

(x-1)+(x+1)+x=35-1+35+1+35=34+36+35=105

Therefore the First number is 34, the second number is 36 and the third number is 35