Question

do it fast.......... ......​

Answer 1

Answer:

let us add x to all four numbers

(6+x ):(15+x ) = (20+x ) :( 43+x )

(6+ x) ( 43+x ) = (20+x ) (15+x )

x2 + 49x + 258 = x2 + 300 +35x

now solve it by your own

answer , x = 3

the number 3 is added to all the numbers

Answer 2

bhaiya dekho kal mene banaya .....