The box contains the same number of table tennis balls and badminton balls. Each time you take out 5 ping pong balls and 3 badminton balls, and after a few times the ping pong balls are gone.
If the equation is solved: let a **** be taken x times
5x=3x+6
5x-3x=6
2x=6
x=6÷2 3X5=15 (pcs)
x=3 3X3=9 (pcs)