Respuesta :

choixongdong
-1.5 + 1.9
= 0.4

hope it helps
AJGreen
-1.5+1.9 can be rewritten as:
1.9-1.5
because the + and the - make a minus.

Once you have this you can solve it;
1.9-1.5 = 0.4

Hope this helps! :)