You'd have to add 19w in order to cancel out the -19w
Answer:

Step-by-step explanation:

The correct option is B.
X would be 0 while Y would be 4
3x+y=4
-(2x+y=4)
----------------
x=0
Plug in x to any of those two equations in their original form
3(0)+y=4
0 + y = 4
y = 4
Answer:
I'm sorry I don't know
Step-by-step explanation:
hopefully someone solves this!
Y=(3[1]+7)^2
y=(10)^2
y=100