Answer:
x=0 y=4
Step-by-step explanation:
12x−5y=−20
y=x+4
substitute y in the first equation with x+4 (the second equation gives you the value of y straight away)
12x-5*(x+4)=-20
12x-5x-20=-20
7x=0
x=0
use this value of x in the second equation
y=0 + 4 = 4
