Answer:
4
Step-by-step explanation:
(4 X 3) + 4 = 16
Infinitely many solutions
2y=14-2x
y=-x+7
------------
2(-x+7)=14-2x
-2x+14=14-2x
-2x-(-2x)=14-14
-2x+2x=0
0=0
infinitely many solutions
