Respuesta :
This is very simple:
Substitute
X would be 4 and Y would be 3
Thus, you add 4+3 and you get 7
Substitute
X would be 4 and Y would be 3
Thus, you add 4+3 and you get 7
Answer:7
Step-by-step explanation:x+y x=4 and y=3
The four replaces x and the 3 replaces y
It's 4+3