Verified Answer :

I hope this helps you

25,8=19,3+?

?=25,8-19,3

?=6,5

I believe your asking "how much more is 25.8 than 19.3?". So, my answer is.. if you want to find out how much a number is more than another number than subtract. 25.8 - 19.3 = 6.5
25.8 is 6.5 more than 19.3