Question

the diffrence between two no is 26and one no is 3 time of other . Find them

Answer 1

Let the numbers be x and y with x > y.
Then x - y = 26.
Then 3x = y OR 3y = x. [One number is thrice the other, and we don't know that which is the 'one' and which is the 'other']

Solving them independently, we have x = 39 and y = 13 or x = -13 and y = -39.