f+4y=o......1. 2x+y=2......2 tolong dijawab kak

x + 4y = 0 |×2
2x + y = 2
maka
2x + 8y = 0
2x + y = 2
------------------(-)
7y = - 2
y = - 2/7
disubtitusi ke pers :
x + 4y = 0
x + 4(-2/7) = 0
x -8/7 = 0
x = 8/7
hp = {8/7 , - 2/7}