Question

If 1/3 of a number exceed its 2/7by 1 find the number easy method

Answer 1

Let the number be x so,

1/3 x - 2/7 x = 1

Taking denominator as 21 we get:

7/21 x - 6/21 x = 1

Solving this we get:

1/21 x = 1

x = 21

The number is 21