Question

two thirds of a number is more than three fifth of the number by 6 find the number?

Answer 1

2/3x - 3/5x = 6
10x-9x/15 = 6
x/15 = 6
x = 15×6
x = 90

Answer 2

let the no be X
2/3x= 3/5x +6
this is because wen we add 6 to three-fifth of the number it becomes equal since 2/3of the no. is 6 more than 3/5 of the no.
2/3x=3/5x+6
2/3x-3/5x=6
(10x-9x)/15 =6                        ∵doing L.C.M
x/15=6
x=6×15
x=90