Question

13. If (x, y) is the solution to the system of equa-
tions shown below, what is the value of x + y?
x + 4y = 20
x + 7y=41
A) – 13
B) -1
C) 1
D) 15

Answer 1

Answer:

-1

Step-by-step explanation:

all work is shown and pictured