Question 1138179
let the number be x and x + 1.


if the sume of their ages is 25, then x + x + 1 = 25.


combine like terms to get 2x + 1 = 25


subtract 1 frm both sides of this equation to get 2x = 24


solve for x to get x = 12


their ages are 12 and 13.


the sum of their ages is 25.


solution looks good.


the age of the younger friend is 12.