We know that, while performing the addition , the sequence doesn't matter and here always L.H.S = R.H.S
So on the right hind side will have the same numbers as L.H.S although sequence can be changed.
On observing we found that 10 which are in the orange circle are missing in RHS.
And 13 in blue diamond is missing from LHS, also 15 in green box is missing from LHS.