Bonjour
The soccer team earns 350 $ (with tips) , so it's plus 350 = + 350
But they spent 80$ on supplie , so it's less 80$ = - 80
now you have to take off 80$ from 350 $ to know exatly the team's profit.
What they earned minus what they spent
350 - 80 = 270 $ 350
- 80
--------------------
270
☺☺☺