math

You may not be able to do this problem because the difference is going to be a negative. The correct answer is -13.6.

It is not possible to this because the computer registers the commas as points

So instead of reading it as

[size=200]1,123.9-1,137.5[/size]

It reads it as

[size=200]1.123.9-1.137.5[/size]



[b][size=150]If you wanted the the points to serve as multiplication signs then sadly you can not and will have to replace them with multiplication signs[/size]

[size=200] [/size]