1. 56.4
2.107.15
So for the first one I subtracted like this:53.41- -2.99=56.4
You may be wandering why i subtracted that way,I did that because you are meant to subtract and the second number already has a negative sign which is MINUS.
And for the second I subtracted the smaller number from the bigger number this way:144.96 ‐ 37.8
Hope this helps...