X + y =5 2x + y=8 x brapa? Y brapa?

X=3 dan Y=2...
Mohon jadi jawaban ter-brainly, please...

pakai cara eliminasi
x + y = 5 (dikali 2)
2x+y= 8 (dikali 1)

2x +2y= 10
2x + y = 8 –
-------------------
y = 2

kalau y = 2, maka x = ....
x + 2 = 5
x = 5 - 2
x = 3

atau pakai cara subtitusi
x + y = 5
x = 5 - y
y = 5 - x

2x + y = 8
2x + 5 - x = 8
x + 5 = 8
x = 8 - 5
x = 3

x = 3
x + y = 5
3 + y = 5
y = 5 -3
y = 2


jawabannya
x = 3
y = 2